Describe why a negative times a negative equals a positive in your own words

What term makes it inconsistent y=2x - 4 ?

Ethan is proving that the slope between any two points on a straight line is the same. he has already proved that triangles 1 and 2 are similar. drag statements and reasons to complete the proof.

If bill bought a home for $210,000 and he sold it a year later for $120,000 his percentage of loss is