Question

I WILL GIVE A MEDAL
Arrange the parabolas represented by the equations in increasing order with respect to the y-values of their directrixes.
y = -x2 + 3x + 8
y = 2x2 + 15x + 18
y = -x2 + 7x + 14
y = -2x2 + 9x + 7
y = x2 + 13x + 5
y = -x2 + 8x + 5
y = -2x2 + 4x + 8

Answer 1

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