Helllppp!
y = -1/2x^2 + 2
y = -2x^2 + 3
y = -3/4x^2
y = -4/5x^2 - 5
for the quadratic equations shown here, which statement is true?
a) the graphs open upward.
b) the graphs open downward.
c) the graphs are symmetric about the x-axis.
d) the graphs are listed from narrowest to widest.