Answer
Answer A
Work Step by Step
The formula for the axis of symmetry and the x-coordinate of the vertex is:
$x=\frac{-b}{2a}=\frac{-3}{2.2}=\frac{-3}{4}=-0.75$
To find the y-coordinate of the vertex, substitute the value for
x into the equation and solve for y:
$y=2(-0.75)^2+3(-0.75)-1$
$y=-2.125$
The correct answer is A.
