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rebecca1233

  • 3 years ago

Part a.) Find the slope of the line that contains the points, (1, 2) and (2, 5). Part b.) Using the slope that you found in part a and one of the given points, write the equation of the line. Please write your final answer in slope-intercept form.

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  1. AriPotta
    • 3 years ago
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    do you know the slope formula?

  2. rebecca1233
    • 3 years ago
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    sorta.. i forgot

  3. AriPotta
    • 3 years ago
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  4. AriPotta
    • 3 years ago
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    what would the equation look like after you substitute the x's and y's?

  5. rebecca1233
    • 3 years ago
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    2-5 / 2-1

  6. AriPotta
    • 3 years ago
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    (2-5)/(1-2) when you decide which coordinate pair will be "1" and "2" you gotta keep it like that

  7. AriPotta
    • 3 years ago
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    so what's our slope?

  8. rebecca1233
    • 3 years ago
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    idk ? im confused now

  9. AriPotta
    • 3 years ago
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    what's 2 - 5?

  10. rebecca1233
    • 3 years ago
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    -3

  11. AriPotta
    • 3 years ago
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    and what's 1 - 2?

  12. rebecca1233
    • 3 years ago
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    -1

  13. AriPotta
    • 3 years ago
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    right, so what's -3/-1?

  14. rebecca1233
    • 3 years ago
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    3

  15. AriPotta
    • 3 years ago
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    exactly, so our slope is 3

  16. AriPotta
    • 3 years ago
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    do you understand how we got that?

  17. rebecca1233
    • 3 years ago
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    sorta can u just explain it in simplier terms

  18. AriPotta
    • 3 years ago
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    |dw:1351215308811:dw|

  19. AriPotta
    • 3 years ago
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    |dw:1351215523686:dw|

  20. rebecca1233
    • 3 years ago
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    okay so part a : is slope is 3 and part b is ?

  21. AriPotta
    • 3 years ago
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    do you know what point-slope form is?

  22. AriPotta
    • 3 years ago
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    because you have to put the information into point-slope form first before you can get it into slope-intercept form

  23. rebecca1233
    • 3 years ago
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    YES. im just confused on now part b

  24. rebecca1233
    • 3 years ago
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    y = 3x and what for slope form

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

  26. rebecca1233
    • 3 years ago
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    (2-5)/(1-2)

  27. AriPotta
    • 3 years ago
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    you haven't done part b yet

  28. AriPotta
    • 3 years ago
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    if we use the first ordered pair for our equation, we know that y1 is 2, x1 is 1, and m is 3. so y - 2 = 3(x - 1)

  29. AriPotta
    • 3 years ago
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    do you know how to change that into slope-intercept form?

  30. rebecca1233
    • 3 years ago
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    no

  31. rebecca1233
    • 3 years ago
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    y = 3x-1?

  32. AriPotta
    • 3 years ago
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    that's right :D

  33. rebecca1233
    • 3 years ago
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    thanks . i have a few more questions i need help with i would like help with them

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