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  • 3 years ago

Write an equation in slope-intercept form for the line shown. http://roads.advancedacademics.com/contentserver/content/roadssection/277812/questions/4-hw7/slope_intercept_2.gif A. y = 2/3 x + 2 B. y = 3/2 x - 4 C. y = 3x - 4 D. y = 2x - 1

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  1. AriPotta
    • 3 years ago
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    find the slope between (0,-4) and (2,-1)

  2. AriPotta
    • 3 years ago
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  3. xxdgffsdgdfgffgsg
    • 3 years ago
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    ok I got 3/2 now what

  4. AriPotta
    • 3 years ago
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    which choice has 3/2 as the slope?

  5. xxdgffsdgdfgffgsg
    • 3 years ago
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    b

  6. AriPotta
    • 3 years ago
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    so that's your answer :)

  7. xxdgffsdgdfgffgsg
    • 3 years ago
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    can you help me on this question Write an equation in slope-intercept form of the line with the given slope and point: slope = 3 and (1, -2). A. y = 3x - 5 B. y = 3x - 2 C. y = 3x + 1 D. y = 3x + 3

  8. AriPotta
    • 3 years ago
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    put the information in point-slope form, then change it into slope-intercept form

  9. xxdgffsdgdfgffgsg
    • 3 years ago
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    how do i make it into point slope form

  10. AriPotta
    • 3 years ago
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    point-slope form is y - y1 = m(x - x1)

  11. xxdgffsdgdfgffgsg
    • 3 years ago
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    I know that but how to I fill that in to then make it slope intercept form

  12. AriPotta
    • 3 years ago
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    you put the numbers in first, then you can rearrange to make it into slope-intercept

  13. xxdgffsdgdfgffgsg
    • 3 years ago
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    where would I put the numbers

  14. AriPotta
    • 3 years ago
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    they give you the point (1, -2). so -2 would be y1 and 1 would be x1. they also give you the slope, 3. so 3 would be m

  15. xxdgffsdgdfgffgsg
    • 3 years ago
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    would y and x not y1 and x1 but y and x become 0

  16. xxdgffsdgdfgffgsg
    • 3 years ago
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    also would it look like this y--2=3(x-1)

  17. AriPotta
    • 3 years ago
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    yes. y + 2 = 3(x - 1). now distribute the 3 into the parentheses

  18. xxdgffsdgdfgffgsg
    • 3 years ago
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    y+2=(3-1)

  19. AriPotta
    • 3 years ago
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    no, to distribute, you have to multiply 3 with x, and 3 with -1

  20. xxdgffsdgdfgffgsg
    • 3 years ago
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    so y+2=3-3

  21. AriPotta
    • 3 years ago
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    it would be 3x, not just 3 :) y + 2 = 3x - 3. now, what should we do to get it in the form of y = mx + b? it's our last step

  22. xxdgffsdgdfgffgsg
    • 3 years ago
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    subtract 2 from each side

  23. xxdgffsdgdfgffgsg
    • 3 years ago
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    would that be the right step

  24. AriPotta
    • 3 years ago
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    yea

  25. xxdgffsdgdfgffgsg
    • 3 years ago
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    so it's either b or c

  26. AriPotta
    • 3 years ago
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    so the answer is..?

  27. xxdgffsdgdfgffgsg
    • 3 years ago
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    when i calculate it it comes up with y=3x-1 but that isn't an answer

  28. xxdgffsdgdfgffgsg
    • 3 years ago
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    did i do that wrong

  29. AriPotta
    • 3 years ago
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    what's -3 - 2?

  30. xxdgffsdgdfgffgsg
    • 3 years ago
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    -5

  31. xxdgffsdgdfgffgsg
    • 3 years ago
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    so a

  32. AriPotta
    • 3 years ago
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    yup

  33. xxdgffsdgdfgffgsg
    • 3 years ago
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    thanks if I have any other questions I will send you a message

  34. AriPotta
    • 3 years ago
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    mmk

  35. xxdgffsdgdfgffgsg
    • 3 years ago
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    on this question I came up with c is that right Write the equation y - 2 = 4(x + 5) in standard form. A. 4x + y = 7 B. 4x - y = 3 C. 4x - y = -22

  36. AriPotta
    • 3 years ago
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    yes, it's c :)

  37. xxdgffsdgdfgffgsg
    • 3 years ago
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    k

  38. xxdgffsdgdfgffgsg
    • 3 years ago
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    is this question answer c Write the point-slope form of the equation passing through (5, -1) with a slope of 6. A. y-1=6(x+5) B. y+5=6(x-1) C. y+1=6(x-5) D. y-5=6(x+1)

  39. AriPotta
    • 3 years ago
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    yes, that's also c

  40. xxdgffsdgdfgffgsg
    • 3 years ago
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    is this c to Find the direct variation equation which passes through (0, 0) and (4, 1). A. y = 4x B. y = -4x C. y = 1/4 x D. y = -1/4 x

  41. AriPotta
    • 3 years ago
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    yes. it's c lol.

  42. xxdgffsdgdfgffgsg
    • 3 years ago
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    is this one d Write an equation in slope intercept form of the line that passes through (4, 1) and (5, -1). A. y = -4x + 1 B. y = -1/2 x + 9 C. y = 4x + 1 D. y = -2x + 9

  43. AriPotta
    • 3 years ago
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    yes

  44. xxdgffsdgdfgffgsg
    • 3 years ago
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    I think this is c Which of the direct variation equations has this graph? http://roads.advancedacademics.com/contentserver/content/roadssection/277812/questions/4-hw7/direct_variation_7.gif A. y = 2/3 x B. y = 3x C. y = 1/2 x D. y = 2x

  45. AriPotta
    • 3 years ago
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    that's a

  46. xxdgffsdgdfgffgsg
    • 3 years ago
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    how ?

  47. AriPotta
    • 3 years ago
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    find the slope between (0,0) and (3,2)

  48. xxdgffsdgdfgffgsg
    • 3 years ago
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    ok found it thanks!

  49. xxdgffsdgdfgffgsg
    • 3 years ago
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    is this b Find the direct variation equation of the graph through the points (0, 0) and (1, -2). Write in y=kx form. A. y = 2x B. y = -2x C. y = 1/2 x D. y = -1/2 x

  50. AriPotta
    • 3 years ago
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    yes, b

  51. xxdgffsdgdfgffgsg
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    thanks

  52. xxdgffsdgdfgffgsg
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    How would I do this step by step Write the slope-intercept equation of the line perpendicular to y = 5/2 x - 2, which passes through the point (0, 2). A. y = 5x + 2 B. y = -2/5x + 2 C. y = 2x + 5 D. y = 1/2x + 5

  53. AriPotta
    • 3 years ago
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    perpendicular lines have negative reciprocal slopes. so our line should have a slope of -2/5

  54. AriPotta
    • 3 years ago
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    now we can put that info into point-slope form

  55. xxdgffsdgdfgffgsg
    • 3 years ago
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    b

  56. AriPotta
    • 3 years ago
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    oh lol. you didn't even need to do any math

  57. xxdgffsdgdfgffgsg
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    so its b

  58. AriPotta
    • 3 years ago
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    yea

  59. xxdgffsdgdfgffgsg
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    would this be c Write the slope-intercept form of the equation parallel to y = 7x + 2, which passes through the point (1, -3). A. y = 7x - 10 B. y = -1/7 x + 2 C. y = 7x - 3 D. y = -7x + 10

  60. xxdgffsdgdfgffgsg
    • 3 years ago
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    or d

  61. xxdgffsdgdfgffgsg
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    ?

  62. AriPotta
    • 3 years ago
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    well it wouldn't be d. parallel lines share the same slope, so it's either a or c

  63. xxdgffsdgdfgffgsg
    • 3 years ago
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    i think c

  64. AriPotta
    • 3 years ago
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    it's a

  65. xxdgffsdgdfgffgsg
    • 3 years ago
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    ok how would i get that on my own? step by step

  66. AriPotta
    • 3 years ago
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    put it into point-slope form, then change it to slope-intercept form

  67. AriPotta
    • 3 years ago
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    y + 3 = 7(x - 1) y + 3 = 7x - 7 y = 7x - 10

  68. xxdgffsdgdfgffgsg
    • 3 years ago
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    ok would this be b The slope of the line perpendicular to y = 3/4 x - 7 is A. 3/4 B. -4/3 C. 4/3 D. -3/4

  69. AriPotta
    • 3 years ago
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    yes, that's b

  70. xxdgffsdgdfgffgsg
    • 3 years ago
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    how would i figure this out Is a shape with the vertices (2, 4), (2, -2), (-1, -2), and (-2, 4) best classified as a parallelogram, rectangle, or neither?

  71. AriPotta
    • 3 years ago
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    ugh. i hate these questions

  72. xxdgffsdgdfgffgsg
    • 3 years ago
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    I almost started to cry when I saw that question

  73. AriPotta
    • 3 years ago
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    lol. i would plot it out first before i did the distance formula

  74. xxdgffsdgdfgffgsg
    • 3 years ago
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    ok

  75. xxdgffsdgdfgffgsg
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    http://roads.advancedacademics.com/contentserver/content/roadssection/277823/questions/5-hw1/662.gif A. n is greater than or equal to -8 B. n is greater than or equal to 8 C. n is greater than or equal to 2 D. n is greater than or equal to -2

  76. AriPotta
    • 3 years ago
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    which do you think?

  77. xxdgffsdgdfgffgsg
    • 3 years ago
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    b

  78. AriPotta
    • 3 years ago
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    yes :)

  79. xxdgffsdgdfgffgsg
    • 3 years ago
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    Which statement is best represented by http://roads.advancedacademics.com/contentserver/content/roadssection/277825/questions/5-hw2/677.gif A. One fourth times a number is at least 12. B. One fourth times a number is greater than 12. C. One fourth times a number is at most 12. D. One fourth times a number is less than 12.

  80. xxdgffsdgdfgffgsg
    • 3 years ago
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    I was think b or c

  81. AriPotta
    • 3 years ago
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    at most means less than or equal to

  82. AriPotta
    • 3 years ago
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    so it's not c

  83. AriPotta
    • 3 years ago
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    and it would be b if it there wasn't a line underneath the inequality

  84. AriPotta
    • 3 years ago
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    but since there is...it's not b

  85. AriPotta
    • 3 years ago
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    and we know it's not d...

  86. AriPotta
    • 3 years ago
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    so it must be...

  87. xxdgffsdgdfgffgsg
    • 3 years ago
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    Solve the following: b + 4 < -8. A. b < -12 B. b < -4 C. b > 12 D. b > 4

  88. AriPotta
    • 3 years ago
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    which do you think?

  89. xxdgffsdgdfgffgsg
    • 3 years ago
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    b

  90. AriPotta
    • 3 years ago
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    no. what's -8 - 4?

  91. xxdgffsdgdfgffgsg
    • 3 years ago
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    -12

  92. AriPotta
    • 3 years ago
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    yes, so it's a. can you make a new question thread now? lol sorry, but when it gets too long, i start to lag

  93. xxdgffsdgdfgffgsg
    • 3 years ago
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    thanks and ok

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