explain the difference between partitioning a directed line segment MN in a 2:7 ratio versus a 7:2 ratio.

your answer is #3 , 8 - 3 square root of 11

graphs that are inverses of each other are graphs where their slopes are reciprocals of each other for example say you have an original equation of y=2x. the inverse of that graph would be y=-1/2(x). also when you see a graph where the original and the inverse is graphed the angle around intersection is 90 degrees.