Write the equation of a line that passes through the coordinates (0,9) and (5,-16

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Bruce F. answered • 01/24/18

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Is this just a matter of using Y=mX + b?

The 1st coordinates say b, the y-intercept, is 9 because X=0.

m is the slope which is Δy/Δx, (9 - (-16))/(0-5) = 25/-5 = -5.

Y=-5X + 9.

QED?

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