SOLUTION: 10: Points (?, 3) and (-2, -5) lie on a line with slope 4. What is the missing coordinate?

Algebra ->  Points-lines-and-rays -> SOLUTION: 10: Points (?, 3) and (-2, -5) lie on a line with slope 4. What is the missing coordinate?      Log On


   

Question 143647: 10: Points (?, 3) and (-2, -5) lie on a line with slope 4. What is the missing coordinate?
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
slope = (change in y) / (change in x)
P%5B1%5D(x,3)
P%5B2%5D(-2,-5)
%28-5+-+3%29+%2F+%28-2+-+x%29+=+4
-5+-+3+=+4%2A%28-2+-+x%29
-8+=+-8+-+x
add 8 to both sides
-x+=+0
x+=+0
The missing coordinate is 0