And when you remember that the graph of a quadratic function is a parabola, this makes a lot of sense. Every parabola has an axis of symmetry that splits the parabola into two mirror-image pieces. In ...

The graph below has a turning point (3, -2). Write down the nature of the turning point and the equation of the axis of symmetry.

Finding the y-intercept The graph of the quadratic equation y = a x 2 + b x + c crosses the y-axis at the point (0, c).