Hey im confused can you me with this?

If the slope of one line equals the slope of another line then ? a) the two lines are intersecting lines b) the two lines are perpendicular lines c) the two lines are parallel lines d) the two lines always have very steep slopes

Find the solution set of this inequality. select the correct graph. |8x+16|> 16

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0