Math.

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Determine whether the lines are parallel, perpendicular, or neither.

# 1) y = 5( 4x + 9) and y = - 1/20x - 4

A) Parallel
B) Perpendicular
C) Neither

#2) y = 9x + 9 and y = -9x + 9

A) Parallel
B) Perpendicular
C) Neither

• Math. -

1. 5(4X + 9) and Y = -1/20X -4.
Y = 20X + 45
The slopes are negative reriprocals.
Therefore, the are perpendicular.

2. Y = 9X + 9 and y = -9X + 9.
Ans: neither.

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