Question

Graph the quadratic y=4x^(2)+3x−8
. What is the vertex of this quadratic?(1 point)
Responses

(0,−8)

left parenthesis 0 comma negative 8 right parenthesis

(−0.375,−8.563)

left parenthesis negative 0.375 comma negative 8.563 right parenthesis

(−1.838,0)

left parenthesis negative 1.838 comma 0 right parenthesis

(1.088,0)

left parenthesis 1.088 comma 0 right parenthesis

Answer 1

The vertex is at x = −b/(2a) = −3/(2·4) = −3/8 = −0.375.
y = 4(−0.375)^2 + 3(−0.375) − 8 = −8.5625 ≈ −8.563.

So the vertex is (−0.375, −8.563).