2 Points What is the vertex of the graph of this equation y=-4x2 - 16x - 12?
O A. (-2,-4)
O B. (2, 4)
O C. (2, -4)
D. (-2,4)

Help need this solved fast

D

Step-by-step explanation:

Given a parabola in standard form, y = ax² + bx + c ( a ≠ 0 )

Then the x- coordinate of the vertex is

= -

y = - 4x² - 16x - 12 ← is in standard form

with a = - 4 and b = - 16 , thus

= - = - 2

Substitute x = - 2 into y for corresponding y- coordinate

y = - 4(- 2)² - 16(- 2) - 12 = - 16 + 32 - 12 = 4

vertex = (- 2, 4 ) → D

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step-by-step explanati∵∵∴∴on:

x = -4

step-by-step explanation:

- 20 - 4(x + 3) = 4x

=> -20 - 4x - 12 = 4x

=> - 32 -4x = 4x

=> -32 = 4x + 4x

=> - 32 = 8x

=> -32/8 = x

=> -4 = x