Need help I really do pls my going to get a f and I don’t want to repeat

Find an equation of the line perpendicular to the graph.

With: label the vertices and all the elements needed. find x

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =