SOLUTION: Find x or y. (-12, 9), (x, -2); slope = -1/2 Can I see the work provided too?

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Question 956773: Find x or y.
(-12, 9), (x, -2); slope = -1/2
Can I see the work provided too?
Found 2 solutions by josgarithmetic, MathTherapy:
Answer by josgarithmetic(39616)   (Show Source): You can put this solution on YOUR website!
Formula for slope:
Points (u,v) and (r,s) have a slope m,



In your example, one of the coordinates is unknown and you must solve for it.
Answer by MathTherapy(10551)   (Show Source): You can put this solution on YOUR website!

Find x or y.
(-12, 9), (x, -2); slope = -1/2
Can I see the work provided too?
Use the slope formula:  to determine , given:

Slope, or 

 = 

 = 

 = , and

 =  

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