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anonymous
 5 years ago
Choose all of the following equations that have a vertex that is the minimum point of the parabola. More than one answer may be chosen.
y = 2x2 + 2x + 8
y = −16x2 + 2x − 4
y = −x2 − 4x − 3
y = x2 + 2x + 4
anonymous
 5 years ago
Choose all of the following equations that have a vertex that is the minimum point of the parabola. More than one answer may be chosen. y = 2x2 + 2x + 8 y = −16x2 + 2x − 4 y = −x2 − 4x − 3 y = x2 + 2x + 4

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anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0can you explain how to do this?

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0We need to know if the parabolas open up or down. If they open up, then they have a minimum value at the vertex. A parabola opens up if the coefficient to the aterm is positive. Notice that a is positive for y = 2x2 + 2x + 8 y = x2 + 2x + 4 and a is negative for y = −16x2 + 2x − 4 y = −x2 − 4x − 3 Thus, y = 2x2 + 2x + 8 y = x2 + 2x + 4 have vertices that are minimum points of the their parabolas.
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