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8 votes
8 votes
What is the slope of the line that passes through each pair of points in (-4,-1),(-4,-5)

User MJehanno
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1 Answer

21 votes
21 votes
So to start off you subtract y2 - y1/x2 - x1. This should look like -5 - -1/ -4 - -4. Now you do the math and you should get -4/0. Therefore the slope is undefined.
User Neil Agarwal
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