Function y=6-9 x-x^2 is strictly increasing function on interval … - Vidyadip

MCQ

Function $y=6-9 x-x^2$ is strictly increasing function on interval __________ .

✓
$\left(-\infty,-\frac{9}{2}\right)$
B
$\left(-\infty, \frac{9}{2}\right)$
C
$(-\infty, 0)$
D
$\left(0,-\frac{9}{2}\right)$

✓

Answer

Correct option: A.

$\left(-\infty,-\frac{9}{2}\right)$

A

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