Asked by Deborah

Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.
x + 5y = –20

y = –7/8x – 1 and
32x – 28y = –36
parallel
perpendicular
neither

I think its neither?
Answered by Reiny
slope of first line = -1/5
slope of 2nd line = -7/8
slope of 3rd line = +32/28 = -8/7

mmmh, so using what you learned about slopes , what do you think?
Hint: you are wrong.
Answered by Deborah
Is it perpendicular? opposite reciprocals
Answered by Anonymous
Determine if the graphs of the equations are parallel, perpendicular, or neither:

4x – 3y = 6

6x + 8y = 9
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