The midpoint is the average of the coordinates of the endpoints.
M = (A + B)/2 = ((1+7)/2, (3+8)/2) = (4, 11/2)
The midpoint of AB is (4, 11/2).
Draw a circle then put a point in the center and draw a line connecting it to the center. That will be the ducks path. It's called the radius
9y + 63 is the answer simplify
95-55 is the simpliest form