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

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


   

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) About Me  (Show Source):
You can put this solution on YOUR website!
Formula for slope:
Points (u,v) and (r,s) have a slope m,

m=%28v-s%29%2F%28u-r%29

In your example, one of the coordinates is unknown and you must solve for it.

Answer by MathTherapy(10551) About Me  (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: m+=+%28y%5B1%5D+-+y%5B2%5D%29%2F%28x%5B1%5D+-+x%5B2%5D%29 to determine x%5B2%5D, given:

Slope, or m+=+-+1%2F2

x%5B1%5D = -+12

x%5B2%5D = x

y%5B1%5D = 9, and

y%5B2%5D = -+2