The segment connecting A(-10,9) and B(7,-6)

a.) is extended to C so that |BC| = 3/5 |AC|, find the coordinates of C.

b.) the equation of the perpendicular bisector which is equidistant from pt. A & C.

Sorry i really don't have a clue on how to solve this.

My instructor didn't even give any hint/formula.

Thanks.