Question

Please help me out.........

Answer 1

Answer:

This is the answer : (answer given in the picture)

Answer 2

Answer:

vertex = (- 3, 24)

Step-by-step explanation:

Given a quadratic in standard form y = ax² + bx + c : a ≠ 0, then

The x- coordinate of the vertex is

$x_{vertex}$ = - $\frac{b}{2a}$

y = - x² - 6x + 15 ← is in standard form

with a = - 1, b = - 6, thus

$x_{vertex}$ = - $\frac{-6}{-2}$ = - 3

Substitute x = - 3 into the function for corresponding value of y

y = - (- 3)² - 6(- 3) + 15 = - 9 + 18 + 15 = 24

vertex = (- 3, 24)