I need help, I want to know how to do them because I don't understand, if someone helps me give process please ;D

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

An equation in slope-intersept form the lines that passes thought (-8,1) and is perpindicular to the y=2x-17.

Corresponding angles are a. always b. sometimes c. never congruent