math help please

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?

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  1. 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.

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  2. Is it perpendicular? opposite reciprocals

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  3. Determine if the graphs of the equations are parallel, perpendicular, or neither:

    4x – 3y = 6

    6x + 8y = 9

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