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Choose all of the following equations that have a vertex that is the maximum point of the parabola. More than one answer may be chosen.

y = −4x2 + 8x − 19
y = 3x2 + 9x − 4
y = 8x2 − 6x + 128
y = −x2 − 7x + 1

Respuesta :

ClarenceV
The answers are (a), y = −4x^2 + 8x − 19 and (d), y = −x^2 − 7x + 1. Because the 'a' value in both these equations is negative, the parabola opens downwards, meaning the vertex would be the highest or maximum point.

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