Determine whether the pair of lines is parallel, perpendicular, or neither.

y equals six sevenths x minus 9

y equals negative six sevenths x minus 9

Choose the correct answer below.

A.

Perpendicular

B.

Neither

C.

Parallel

B. Neither

The slope of the first equation is m=6/7. To have the second equation parallel to the first, it must have the same slope of 6/7. To make it perpendicular, it should have a negative reciprocal slope of - 7/6. Unfortunately, the second equation does not qualify on both conditions.