Tell whether the lines for each pair of equations are parallel, perpendicular, or neither.

y = ( )x + 8

–2x + 8y = 4

a. parallel

b. perpendicular

c. neither

According to statistics a person will devote 32 years to sleeping and watching tv. the number of years sleeping will exceed the number of years watching tv by 18. over a lifetime, how many years will the person spend on each of these activities

Consider that lines b and c are parallel. what is the value of x? what is the measure of the smaller angle?

Perry observes the opposite parallel walls of a room in how many lines do the plains containing the walls intersect