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Sarah_Miller720

Write an equation in point-slope form for the line through the given point with the given slope. (–7, 9); m = 4/5 I need help, idk how to write equations.

  • one year ago
  • one year ago

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  1. zordoloom
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    Do you know what the point-slope formula is? If so, could you write it out?

    • one year ago
  2. JayDS
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    use the unknown equation formula. since we have m=4/5 and one point (-7,9) x1,y1 y-y1=m(x-x1) y-9=4/5(x--7) expand and solve for y to be on the LHS to look like this y=......

    • one year ago
  3. JayDS
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    point-slope form/general linear equation would be y=mx+c m=gradient c=y-intercept.

    • one year ago
  4. zordoloom
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    Just leave whatever you get in point slope formula. You don't have to rearrange it. Which is y-y1=m(x-x1)

    • one year ago
  5. zordoloom
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    So you would leave y-9=4/5(x--7) as is, except change x--7 to x+7

    • one year ago
  6. JayDS
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    point slope formula is meant to be y=mx +c so I believe u have to rearrange for y to be on the LHS

    • one year ago
  7. zordoloom
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    y=mx+b is the slope intercept form. y-y1=m(x-x1) is the point slope form.

    • one year ago
  8. JayDS
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    u are right, I just briefly searched it, sorry I didn't know the difference.

    • one year ago
  9. Sarah_Miller720
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    y-0=4/5(x+7)

    • one year ago
  10. JayDS
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    never knew y-y1=m(x-x1) was called point slope form, thought it was y=mx+b/y=mx+c

    • one year ago
  11. zordoloom
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    Since the question requested for point slope form, leave it as y-9=4/5(x+7)

    • one year ago
  12. Sarah_Miller720
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    oh that 0 is suppose to be a 9 i clicked the wrong number btw

    • one year ago
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