SOLUTION: If (3, k) lies on the line with slope m=-2 and passing through (2,5), find k. Thanks so much!

Algebra ->  Linear-equations -> SOLUTION: If (3, k) lies on the line with slope m=-2 and passing through (2,5), find k. Thanks so much!      Log On


   

Question 642383: If (3, k) lies on the line with slope m=-2 and passing through (2,5), find k. Thanks so much!
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
m = (y2-y1)/(x2-x1)

-2 = (5-k)/(2-3)

-2 = (5-k)/(-1)

-2(-1) = 5-k

2 = 5-k

2-5 = -k

-3 = -k

3 = k

k = 3