SOLUTION: A line passes through the points (-1,5) and (3,k) and has y-intercept 7. Find the value of k.

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Question 684137: A line passes through the points (-1,5) and (3,k) and has y-intercept 7. Find the value of k.
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
Use (-1, 5) and y intecept 7, which is (0, 7) to find slope
%285-7%29%2F%28-1-0%29+=+-2%2F-1+=+2
...
Use (-1, 5) and (3, k) and slope to solve for 5
%285-k%29%2F%28-1-3%29+=+2
...
5-k = 2(-4)
5 - k = -8
-k = -8 - 5
-k = -13
highlight_green%28k+=+13%29
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