Question

One line passes through the points (−8,1) and (4,4). Another line passes through points (−9,−7) and (9,−3)

Are the lines parallel, perpendicular, or neither?

Answer 1

Explanation:

slope of first line=(4-1)/(4-(-8))=3/12=1/4

slope of second line=[-3-(-7)]/[9-(-9)]=(-3+7)/(9+9)=4/18=2/9

slopes are not equal so they are not parallel.

product of slopes=1/4 *2/9=1/8 ≠-1

so they are not perpendicular.

so lines are neither parallel nor perpendicular.