Which statement is true? A: - 16/6 is equivalent to 8/3 because 8/3 x -2/-2 = - 16/6
B: 3/5 is equivalent to - 9/15 because 3/5 x 3/3 = - 9/15
C: 20/6 is equivalent to - 10/-3 because - 10/-3 x -2/-2 = 20/6
D: - 5/8 is equivalent to 20/32 because - 5/8 x 4/4 = 20/32

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