Question

Line j passes through points (9, 6) and (6, 8). Line k passes through points (7, 9) and (5, 6). Are line j and line k parallel or perpendicular?

Answer 1

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Answer:

perpendicular

Explanation:

A graph shows the lines are not parallel. The lines are perpendicular.

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j has a slope of -2/3 (down 2 for each 3 to the right)

k has a slope of 3/2 (up 3 for each 2 to the right)

These slope values have a product of 1, typical of perpendicular lines.