Which of the following is the equation of the axis of symmetry for the function?
y = x^2 -4x + 8
A. y = 2x
B. x = 2
C. y = -2
D. x = -4

Question

Which of the following is the equation of the axis of symmetry for the function?
y = x^2 -4x + 8
	A.	y = 2x
	B.	x = 2
	C.	y = -2
	D.	x = -4

anonymous · Answer

it cannot be y = anything, because of the way the graph is (imagine y = x^2, it does not make sense to cut the graph horizontally, but rather right through the vertex with a veritical line)

hence, the axis of symmetry.. goes through the vertex with a vertical line lol

if you can find the vertex, or at the VERY least the x-coordinate of the vertex, you will immediatly know the axis of symmetry

anonymous · Answer

this is a question from my online skooling, so it would have to be one of them lol