Question

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

Answer 1

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.