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3 years ago

11

Which equation is y = 9x2 + 9x – 1 rewritten in vertex form?

1 answer:

Jlenok [28]3 years ago

6 0

<u>Vertex for X</u>
$-\frac{9}{2(9)} = -\frac{2}{18} = -\frac{1}{9}$

<u>Vertex for Y</u>
$y = 9x^{2} + 9x - 1 \\y = 9(-\frac{1}{9})^{2} + 9(-\frac{1}{9}) - 1 \\y = 9(\frac{1}{81}) - 1 - 1 \\y = \frac{1}{9} - 1 - 1 \\y = -\frac{8}{9} - 1 \\y = -1\frac{8}{9}$

<u>Vertex</u>
(h, k) = (⁻¹/₉, -1⁸/₉)

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Read 2 more answers

vekshin1

Answer:

Option (1) will be the answer.

Step-by-step explanation:

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