Question

What is the equation of the line of symmetry for the graph of y = –2(x – 4)2 + 3?

Answer 1

from the vertex form just solve from within the parenthises, so the answer is x=4

Answer 2

are you sure?

Answer 3

yes

Answer 4

that means the vertex is 4, 3
and the axis of symmetry is the first coordinate of the vertex which is 4, hence x=4 is the axis of symmetry