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brianhai97

  • 2 years ago

Write the equation of the line with a slope 3/7 passing through the point 9,-2.

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  1. GOODMAN
    • 2 years ago
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    y=mx+b You have m(slope)= 3/7 And you have (x, y) (9,-2) x=9 and Y=-2 We need to find b. So we plug all this information in to the equation y=mx+b -2=(3/7)(9)+b Solve that and you will get b. Once you have b, plug it in to the equation, along with the slope.

  2. brianhai97
    • 2 years ago
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    you wouldnt use y-y=m(x-x)??

  3. beketso
    • 2 years ago
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    yes u can use that

  4. brianhai97
    • 2 years ago
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    how would i set it up?

  5. beketso
    • 2 years ago
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    u have ur gradient m = 3/7

  6. beketso
    • 2 years ago
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    and ur point (9,-2) so let \[x _{1}=9 \] and \[y _{1}=-2\] and then plug ur values in the equation \[y=m(x-x _{1})+y _{1}\]

  7. beketso
    • 2 years ago
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    dus that help?

  8. brianhai97
    • 2 years ago
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    once i solve it, would that be my answer?

  9. beketso
    • 2 years ago
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    yep.u have to get a linear equation

  10. brianhai97
    • 2 years ago
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    ok thanks alot

  11. beketso
    • 2 years ago
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    yw

  12. brianhai97
    • 2 years ago
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    is 2x-9y= -3/7 the correct answer?

  13. beketso
    • 2 years ago
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    actually it is y=(3/7)x-(41/7) or 7y=3x-41

  14. beketso
    • 2 years ago
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    check the equation i gave you and see if u have done the plugging and calculations accurately

  15. beketso
    • 2 years ago
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    or rather show me step by step how u do it

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