The graph of a function is a line that passes through the coordinates (0, 1) and (3, 10). Write an equation in the form y=mx+b for the function.

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