What is the equation of the parabola? coordinate plane with a parabola facing down with vertex at 0 comma 5, the point 0 comma 3 and a horizontal line going through 0 comma 7

y = −one eighthx2 + 5
y = one eighthx2 + 5
y = one eighthx2 − 5
y = −one eighthx2 − 5