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Pagen13

  • one year ago

Can someone help me with a few questions??! I have issues with slope!

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  1. kropot72
    • one year ago
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    Can you post one of the questions.

  2. Pagen13
    • one year ago
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    What is the slope of the line that passes through the given points? (3,2) and (5,12) a. 5 b. -5 c. -1/5 d. 1/5

  3. hartnn
    • one year ago
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    The slope of the line through points (x1,y1) and (x2,y2) is given by : \(\huge m=\frac{y_1-y_2}{x_1-x_2}\) now,just put the values and find m.

  4. hartnn
    • one year ago
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    in your question, x1= 3 y1 = 2 x2 =5 y2 =12

  5. Pagen13
    • one year ago
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    so 2-12/3-5

  6. hartnn
    • one year ago
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    yes don't forget the brackets (2-12)/(3-5)

  7. Pagen13
    • one year ago
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    -10/-2=5

  8. hartnn
    • one year ago
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    good! \(\huge \checkmark\)

  9. Pagen13
    • one year ago
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    Can you help with some more?

  10. hartnn
    • one year ago
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    sure :)

  11. Pagen13
    • one year ago
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    What is the graph of the equation? 2x-y=2

  12. hartnn
    • one year ago
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    it would be a line. to get the intercepts of that line plug in x= 0, find y plug in y= 0 find x

  13. Pagen13
    • one year ago
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  14. Pagen13
    • one year ago
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    How do I plug it in? Sorry I am lost..

  15. hartnn
    • one year ago
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    2x- y =2 to get x intercept, we put y =0 2x = 2 x =1 so x intercept is 1,0 can you now find y intercept ? put x= 0 in 2x-y =2

  16. Pagen13
    • one year ago
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    y=0

  17. hartnn
    • one year ago
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    -y = 2 so y =-2 y intercept is 0,-2

  18. hartnn
    • one year ago
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    now the points 1,0 and 0,-2 should lie on the graph. which graph has these 2 points?

  19. Pagen13
    • one year ago
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    C

  20. hartnn
    • one year ago
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    correct :)

  21. Pagen13
    • one year ago
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    Write an equation of the line, in point slope form that passes through the two given points: (-2,15) and (9,-18) a.y-2=-3(x-15) b.y-2=-1/3(x+15) c.y-15=-3(x+2) d.y-15=-1/3(x+2)

  22. hartnn
    • one year ago
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    first find the slope using the above formula. x1 = -2 y1 = 15 x2 = 9 y2 = -18

  23. Pagen13
    • one year ago
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    -11/33=3

  24. hartnn
    • one year ago
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    -11/33 is -1/3

  25. Pagen13
    • one year ago
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    Oh yeah sorry..

  26. hartnn
    • one year ago
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    so the equation would be y-y1 = m (x-x1) y -15 = -1/3 (x+2)

  27. Pagen13
    • one year ago
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    Thank you! I have 8 more can you help? I am starting to understand!

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