The scatter plot shows the test scores of a group of students who played games online for different amounts of time in a day: what will most likely be the effect on the test scores of students if the number of hours they play games online increases

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