Here's the question you clicked on:
Solmyr
Choose the equation below whose axis of symmetry is x = 0. y = x2 + 2x y = x2 − 16x + 58 y = x2 + 2 y = x2 − 4x + 2
the 3rd one because if you look at it properly, the only translation is 2 up, that means (since there's no x shift in the graph) the axis of symmetry is x=0