Answer:
I think its neither because
Step-by-step explanation:
Parallel lines and their slopes are easy. Since slope is a measure of the angle of a line from the horizontal, and since parallel lines must have the same angle, then parallel lines have the same slope — and lines with the same slope are parallel. Perpendicular lines are a bit more complicated.

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Take away 1 from both sides
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Evaluate the value on the right
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Multiply by 15 on both side
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Evaluate
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Divide by 6 on both sides
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Simplify
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Answer:
r=14
Step-by-step explanation:
r-6/1-(-1)=4
r-6=8
Therefore, r=14
357 is the answer is that ok?