SOLUTION: Find the value of 'r' so the line that passes through (-4,8) and (r, -6) has a slope of 2/3. Please show work!

Algebra ->  Coordinate Systems and Linear Equations -> SOLUTION: Find the value of 'r' so the line that passes through (-4,8) and (r, -6) has a slope of 2/3. Please show work!      Log On


   

Question 679259: Find the value of 'r' so the line that passes through (-4,8) and (r, -6) has a slope of 2/3. Please show work!
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
%288--6%29%2F%28-4-r%29+=+2%2F3
cross multiply
(8+6)(3) = (-4-r)(2)
...
(14)(3) = -8 - 2r
42 = -8 - 2r
42 + 8 = -2r
50 = -2r
-25 = r
highlight_green%28r=-25%29
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