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35 votes
35 votes
Find the slope of the line through the points(-4,-7) and (4,3)

User Kyasbal
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1 Answer

18 votes
18 votes

Answer:

4/5

Explanation:

The first point (-4, -7) lies in the third quadrant and the second one in the first quadrant. This tells us immediately that the slope is positive; y increases as x increases. The change in x is 4 - (-4), or 8; this is the 'run.' The change in y is 3 - (-7), or 10; this is the 'rise.'

Thus the slope of this line is m = rise/run = m = 8/10, or m = 4/5

User Zoubiock
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