SOLUTION: I need help solving this problem: write the equation of the linear function that has a slope 2/3 and passes through the point (9,-1) I think I use this equation: y-y1=m(x-x1) but

Algebra ->  Linear-equations -> SOLUTION: I need help solving this problem: write the equation of the linear function that has a slope 2/3 and passes through the point (9,-1) I think I use this equation: y-y1=m(x-x1) but       Log On


   

Question 707672: I need help solving this problem: write the equation of the linear function that has a slope 2/3 and passes through the point (9,-1)
I think I use this equation: y-y1=m(x-x1) but not positive
Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
I need help solving this problem: write the equation of the linear function that has a slope 2/3 and passes through the point (9,-1)
I think I use this equation: y-y1=m(x-x1) but not positive
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You can use that but it's faster to use y = mx + b
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You know m = 2/3, and y = -1 when x = 9
Solve for "b":
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-1 = (2/3)(9) + b
-1 = 6 + b
b = -7
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Equation:
y = (2/3)x -7
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Cheers,
Stan H.
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