Question

What is the axis of symmetry and vertex for the graph `y= -7x^2`?

Answer 1

Axis of symmetry of this parabola is -ve y-axis. Vertex is (0, 0).

Explanation:

`x^2=-1/7y = -4/28y`.
This parabola has focus at `(0, -1/28)`.
The directrix is along y = `1/28`