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Why is it not possible to write the equation of the line through (8,-5) and (-8,-9) in slope-intercept form??

4 answers

It IS possible.

The slope is -4/-16 = 1/4

-5 = 8/4 + b
b = -7
y = (1/4)x -7

so it's not undefined?

No, it's not undefined. If the second point were (8,-9) it would be undefined, because the line through the points would be vertical.

thanks

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