SOLUTION: A line with a slope of 8 passes through the points (0,z) and (2,9). What is the value of z? z= thank you

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Question 1088542:
A line with a slope of 8 passes through the points (0,z) and (2,9). What is the value of z?

z=
thank you
Answer by math_helper(2461) About Me  (Show Source):
You can put this solution on YOUR website!

slope = m = (y2-y1)/(x2-x1) = (z-9)/(0-2) = (z-9)/(-2) = 8
z-9 = -16
Ans: +highlight%28z+=+-7%29+
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Check: (-7-9)/(0-2) = -16/(-2) = 8 (ok)
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On a side note: you are free to choose which point is (x1,y1) and (x2,y2). I chose (x1,y1)=(2,9) and (x2,y2)=(0,z) but you can prove it to yourself by reversing them.