Question

The lines shown below are parallel. If the green line has a slope of -, what is the slope of the red line?

Answer 1

parallel lines have the same slope. So whatever the slope of the green line is, that is also the slope of the red line.

Answer 2

First we have to understand the relationship between the slopes of parallel lines .

Slopes of parallel lines are equal . So the slope of greeen line and red lie must be equal.

That is, if slope of green line is -2 , then slope of red line must be -2 too .