SOLUTION: Find the value of r so that the line through (-4,3) and (r, -3) has a slope of 2/3.

Question 122076: Find the value of r so that the line through (-4,3) and (r, -3) has a slope of 2/3.
Answer by ankor@dixie-net.com(22740) (Show Source): You can put this solution on YOUR website!
Find the value of r so that the line through (-4,3) and (r, -3) has a slope of 2/3.
:
Using the slope formula; = m
Assign the values as follows:
x1 = -4; y1 = 3
x2 = r; y2 = -3
m =
:
=
=
Cross multiply
:
2(r+4) = -6(3)
:
2r + 8 = -18
:
2r = -18 - 8
:
r =
r = -13
:
:
Check by finding the slope using x2 = -13
=
= +
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