Question

What must be true of a quadratic function who’s vertex is the same as the Y intercept

Answer 1

The y-axis is the axis of symmetry.

Explanation:

The vertical line through the vertex is the axis of symmetry. If that point lies on the y-axis, then the y-axis is the axis of symmetry.

It will be an even function, with no x-term. That is, it will be of the form ...

y = ax^2 +c