Please help me im so confused

What is the slope of (0,32) and (100,212)

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

1/2+1/6-3/4 simplify the given expression leaving the answer in improper fraction form.