Determine whether the lines through each pair of points are parallel, perpendicular, or neither.
-(-7, -6) and (-9, -18); (-7, -10) and (-13, -11)
A) perpendicular
B) parallel
C) neither

Question

Quizplus · Accepted Answer

The slope of the line through (-7, -6) and (-9, -18) is 6, and the slope of the line through (-7, -10) and (-13, -11) is 1/6. Since the slopes are not equal and their product is not -1, the lines are neither parallel nor perpendicular.

Determine Whether the Lines Through Each Pair of Points Are