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anonymous

  • one year ago

help plz

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  1. anonymous
    • one year ago
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    Below are two different functions, f(x) and g(x). What can be determined about their y-intercepts? f(x) = x + 4 x g(x) −1 8 1 0 2 −4 The function f(x) has a higher y-intercept. The function g(x) has a higher y-intercept. They both have the same y-intercept. The relationship between y-intercepts cannot be determined.

  2. Nnesha
    • one year ago
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    g(x) is same as y so first of all find y-intercept of de table

  3. Nnesha
    • one year ago
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    y=mx+b is a slope intercept form where m is slope and b is y-intercept f(x)=x+4 <----what is the y-intercept in this equation ?

  4. anonymous
    • one year ago
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    4

  5. Nnesha
    • one year ago
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    yes right and what's the y-intercept of table ?

  6. Nnesha
    • one year ago
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    the*

  7. anonymous
    • one year ago
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    there is 0, 8, and -4

  8. anonymous
    • one year ago
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    brb please i have to go help my mom out

  9. Nnesha
    • one year ago
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    nope 0 ,8 and -4 are y values not y-intercept first of all you have to find slope of the table and then y-intercept

  10. Nnesha
    • one year ago
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    alright :-)

  11. anonymous
    • one year ago
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    i meant \[\frac{ 8 }{ 2 } = \frac{ 4 }{ 1 }\\= 4\]

  12. Nnesha
    • one year ago
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    formula is \[\huge\rm \frac{ y_2 - y_1 }{ x_2 - x_1 }\]plug in x and y values u forgot something .-.

  13. anonymous
    • one year ago
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    \[0 - 8 = -8 and 1 - (-1) = 2\] so we got -4 because \[- \frac{ 8 }{ 2 } = -4\]

  14. Nnesha
    • one year ago
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    yes right

  15. anonymous
    • one year ago
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    now what?

  16. Nnesha
    • one year ago
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    now y = mx + b replace m by -4 plug in x and y values solve for b

  17. anonymous
    • one year ago
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    okay so y = -4x +b 8 = -4(-1) + b 8 = 4 + b -4 - 4 4 = b b = 4

  18. Nnesha
    • one year ago
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    yes right that's the y-=intercept of the table

  19. anonymous
    • one year ago
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    so its C because they both have the same y-intercept

  20. Nnesha
    • one year ago
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    yep right

  21. anonymous
    • one year ago
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    can you help me with more because your so good at getting me to understand it and doing it myself :)

  22. anonymous
    • one year ago
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    ill post them in a new thread so you can get more medals

  23. Nnesha
    • one year ago
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    i'll try and u can post here :-)

  24. anonymous
    • one year ago
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    okay

  25. anonymous
    • one year ago
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    Alton has been recording the number of apples on his apple tree each week: Week Apples 2 15 3 22 4 29 5 36 The function representing Alton's apples per week is f(w) = 7w + 1. What does the 1 represent? The number of apples at the start The week number when Alton recorded the apples The number of apples Alton had in total The number the apples increased by each week

  26. Nnesha
    • one year ago
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    any idea ?

  27. anonymous
    • one year ago
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    let me read it again

  28. Nnesha
    • one year ago
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    alright

  29. anonymous
    • one year ago
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    the y - intercept right because you said b = y-intercept or it means y intercept

  30. Nnesha
    • one year ago
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    yep one is the y-intercept so what would be ur answer ?

  31. anonymous
    • one year ago
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    the numbers of apples at the start

  32. Nnesha
    • one year ago
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    yes right bec when u substitute 0 for w f(0)=7(0) + 1 you will get one so y-intercept is also the starting point

  33. anonymous
    • one year ago
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    okay thnx i have a coup[le more

  34. Nnesha
    • one year ago
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    okay

  35. anonymous
    • one year ago
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    Im gonna try to solve the next one on my own and you tell me if its right or wrong but this is the question

  36. anonymous
    • one year ago
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    On the graph of the equation 8x − 3y = 24, what is the value of the y-intercept? −8 8 −3 3

  37. anonymous
    • one year ago
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    8x - 3y = 24 -8x - 8x -3y = -8x + 24 /-3 /-3 y = -8x -8 so is the y - intercept -8

  38. Nnesha
    • one year ago
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    alright that's right y-intercept is -8 but slope is not -8 divide both side by -3\[\frac{ -3y }{ -3} = \frac{ -8x+24 }{ -3 } = \frac{ -8x }{ -3 } +\frac{ 24 }{ -3}\]

  39. Nnesha
    • one year ago
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    -8x+24 OVER -3

  40. anonymous
    • one year ago
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    oh okay so its like this \[\frac{ -8x + 24 }{ -3 }\]

  41. Nnesha
    • one year ago
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    yes right -8x is dividing by -3 and 24/-3

  42. anonymous
    • one year ago
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    okay but is the answer -8?

  43. anonymous
    • one year ago
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    for the y-intercept?

  44. Nnesha
    • one year ago
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    so how would you write equation in slope yintercept form ?

  45. anonymous
    • one year ago
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    \[y = \frac{ -8 }{ 3 }x - 8\]

  46. Nnesha
    • one year ago
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    yes right!

  47. anonymous
    • one year ago
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    yay

  48. anonymous
    • one year ago
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    Based on the table of values below, find the slope between points where x = 3 and where x = 7. x y 3 1 4 6 7 9 −4 \[\frac{ 1 }{ 4 }\] 1 2 <--- my choice

  49. Nnesha
    • one year ago
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    how did you get -4 and 1/4 ?

  50. Nnesha
    • one year ago
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    ohh wait those are the choices alright how did you get 2 ?

  51. anonymous
    • one year ago
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    -4 , 1/4, 1, 2 are my answer choices

  52. anonymous
    • one year ago
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    so i did \[\frac{ 9 - 1}{ 7-3 } = \frac{ 8 }{ 4 }\] = 2

  53. Nnesha
    • one year ago
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    yes right

  54. anonymous
    • one year ago
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    okay lol good i thought i did it wrong lol

  55. anonymous
    • one year ago
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    After 3 months of living at his new house, Tony had 4 birds. Four months later, Tony still had 4 birds. Which of the graphs below models Tony's bird population? graph of line going through 4, 0 and 4, 8 graph of line going through 0, 4 and 7, 4 <- my choice graph of line going through 1, 5 and 4, 8 graph of line going through 4, 0 and 7, 3

  56. anonymous
    • one year ago
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    let me know if you want the picture of the graphs

  57. Nnesha
    • one year ago
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    i have to go make a new post and yes we need graph

  58. anonymous
    • one year ago
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    okay

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