What happens to the volume if you double one of the dimensions

In the xy-plane, if the parabola with equation passes through the point (-1, -1), which of the following must be true?

The function models the number of accidents per 50 million miles driven as a function

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.