Asked by Angie

How do you find what x is?

(-2,8) and (x,12)
Answered by Damon
Unless you know the slope, you can not.
What is the rest of the problem?
Answered by Angie
They are ordered pairs and are for the same direct variation.
Answered by Damon
Oh, you need to know it is direct variation, That gives you the slope because the line goes through two known points, (0,0) and (-2,8).
slope = (8-0)/(-2-0) = -4
y = -4 x
12 = -4 x
x = -3
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