Which equation has an axis of symmetry of 2?(1 point)

Responses

y=−x^2+4x+8
y is equal to negative x squared plus 4 x plus 8

y=−x^2+2x+8
y is equal to negative x squared plus 2 x plus 8

y=x^2+2x+8
y is equal to x squared plus 2 x plus 8

y=x^2+4x+8

y=−x^2+4x+8