Classify the set of equations as either parallel or perpendicular lines.

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-77x + 11y = 77
and
y - 7x + 7 = 02x - 3y = 5
and
2y = 3(8 - x)5x - 3x - 2y = y + 3
and
5x - 2x + 3y = y + 35x = 2y - 7
and
10y = 25x + 86y + 8x - 3 = 5
and
-3y = 4x + 179x + 12y = 3
and
-12x + 9y = 9
Parallel lines
Perpendicular lines

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