prealgebra help
posted by carol .
Determine which two equations represent perpendicular lines.
(a) y = 3/10x 3
(b) y=  10/3x 3
(c) y = 1/5x + 3/10
(d) y = 1/5x – 3/10
Equations (a) and (b) are perpendicular t one another, because the product of the slopes is 1.
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