joyfuld14 joyfuld14

14-07-2017
Mathematics

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if lines are parallel or perpendicular 4x-8y=9 and 8x-7y=9

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BlackBriarMead BlackBriarMead

14-07-2017

4x-8y=9
-8y=9-4x
8y=-9+4x
y=0.5x-9/8

8x-7y=9
-7y=-8x+9
7y=8x-9
y=8/7x-9/7

neither, they aren't parallel or perpindicular. I tested by graphing them as well.

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