BP is the perpendicular bisector of AC. CQ is the perpendicular bisector of BD. AB = BC = CD. If AP = 13 cm and AB = 12 cm. What is the length of CD? *

Astudent draws two parabolas both parabolas cross the x axis at (-4,0) and (6,0) the y intercept of the first parabolas is (0,-12). the y intercept of the second parabola is (0,-24) what is the positive difference between the a values for the two functions that describe the parabolas