OpenStax, Precalculus 2e §2.2 Graphs of Linear Functions · Example 5 · Algebra · Graphs

Identifying Parallel and Perpendicular Lines

Given the functions below, identify the functions whose graphs are a pair of parallel lines and a pair of perpendicular lines.

$f (x) = 2 x + 3 g (x) = \frac{1}{2} x - 4 h (x) = - 2 x + 2 j (x) = 2 x - 6$

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OpenStax, Precalculus 2e · §2.2 Graphs of Linear Functions · Example 5

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