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3 years ago

6

If the line passing through the points (a, 1) and (−17, 8) is parallel to the line passing through the points (0, 5) and (a + 2,

1), what is the value of a?

1 answer:

stellarik [79]3 years ago

4 0

Parallel line means the same slope
（8-1）/(-17-a)=(1-5)/(a+2)
so a is 18

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