#3.5 Equations of Parallel and Perpendicular Lines

Front

In a coordinate plane, two distinct nonvertical lines are parallel if and only if they have ________________.

Back

the same slope.

Front

In a coordinate plane, two distinct nonvertical lines are perpendicular if and only if they have ________________.

Back

negative reciprocal slopes.

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Back

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Front

If two lines have slopes of 3 and -rac{1}{3}, what can be said about their relationship?

Back

They are perpendicular.

Front

If two lines have slopes of 2 and 2, what can be said about their relationship?

Back

They are parallel.

Front

Back

They are perpendicular.

Front

Back

They are parallel.