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anonymous

  • 5 years ago

I have one more question to whomever would love to explain to me how u solve this equation. m=7/8;(5,-7)

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  1. anonymous
    • 5 years ago
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    y-(-7)=m(x-5) so you just sub in the gradient and solve

  2. anonymous
    • 5 years ago
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    i know how to write out the equation but after that im lost =(

  3. anonymous
    • 5 years ago
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    What's the question? just to find the equation?

  4. anonymous
    • 5 years ago
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    im sorry its for an online course

  5. anonymous
    • 5 years ago
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    the question is find the equation of the line having the given slope and containing the given point

  6. anonymous
    • 5 years ago
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    You sub it into the point-gradient formula, which is y-y1=m(x-x1) so using the given, sub in your gradient and your y and x-values to get: y-(-7)=(7/8)(x-5) 8(y+7)=7(x-5) 7x-8y-35-56=0 7x-8y-91=0

  7. anonymous
    • 5 years ago
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    Does that help? :I

  8. anonymous
    • 5 years ago
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    im trying to go over it

  9. anonymous
    • 5 years ago
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    You need to find the slope of the original line because the new line is parallel to it and therefore must have the same slope. Then you can write the equation for the new line using the point slope formula \[y-y_0 = m(x-x_0)\] Where y0 and x0 are the y and x coordinates of a point on the line, and m is the slope of the line.

  10. anonymous
    • 5 years ago
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    where do u get 56 from

  11. anonymous
    • 5 years ago
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    8(y+7)=7(x-5) 8y+56=7x-35 0=7x-8y-35-56

  12. anonymous
    • 5 years ago
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    its not the answer

  13. anonymous
    • 5 years ago
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    I just threw everything over to one side..

  14. anonymous
    • 5 years ago
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    answer is 7/8x-

  15. anonymous
    • 5 years ago
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    83/8

  16. anonymous
    • 5 years ago
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    Ohhh you get that answer if you don't get rid of the fraction

  17. anonymous
    • 5 years ago
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    and leave 8 as the denominator

  18. anonymous
    • 5 years ago
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    right whichs is what i wasnt understandin

  19. anonymous
    • 5 years ago
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    When you leave it as a fraction: y-(-7)=(7/8)(x-5) y+7=(7x/8) - 35/8)

  20. anonymous
    • 5 years ago
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    hold on

  21. anonymous
    • 5 years ago
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    can someone type out the working, leaving it in fractional form, it's taking so long for me, ha

  22. anonymous
    • 5 years ago
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    y = (7x/8) - (91/7) confirmed

  23. anonymous
    • 5 years ago
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    \[y+7=[7/8](x-5) \rightarrow y = (7x)/8 - (7*5)/8 -7 \] \[\rightarrow y = (7/8)x - 35/8 - 56/8 = (7/8)x - 91/8\]

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