Question

Can I get help w a) or c) or both?

Answer 1

a)
q and r are your x intersects
so q=-2 and r=4
-> f(x)=p(x-(-2))(x-4)
=p(x+2)(x-4)

b) your axis of symmetry is at x=1

c) to calculate p use the point (0,-4) and insert it:

f(0)=y=-4=p*(0+2)*(0-4)
-4=p*2*-4
-4=p*-8
p=1/2