Question

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

Answer 1

If an equation has an axis of symmetry of x=0, then h=0 which means that the equation is then \[y=a(x-0)^2+k\] which simplifies to \[y=ax^2+k\]


The only equation that fits that form is choice C (since this is the only choice that doesn't have an x term)