y = -4 ( x + 2 )2 - 3 opens?

Question

y = -4 ( x + 2 )2 - 3 opens ___________

 

a.
right

b.
down

c.
left

d.
up

Answer 1

A parabola in vertex form is        y=a(x-h)²+k

 

where:

a is the coeeficient of x² term.

(h, k) is the vertex.

 

If a is positive, then parabola opens upward.

If a is negative, then parabola opens downward.

 

 

Use this fact to answer the question.