Which of the quadratic functions has a graph that opens downward?
Check All that apply
AY=5/2X-3X^2
BY=-(2X^2-1)
CY=3/2X^2-3X+15
DY=3X^2-X-1
Check All that apply
AY=5/2X-3X^2
BY=-(2X^2-1)
CY=3/2X^2-3X+15
DY=3X^2-X-1