What are the values of a, b, and c in the quadratic formula given the equation 2x^2 + 6x= -8 ? a = 2, b = -6, c = -8 a = 2, b = -6, c = 8 a = 2, b = 6, c = -8 a = 2, b = 6, c = 8

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