Answer
Graph the vertex and y-intercept. Then reflect the y-intercept over the axis of symmetry. This will give you a third point to include in your graph. Now, sketch the parabola through this new point, the vertex and the y-intercept.
Work Step by Step
Graph the vertex and y-intercept. Then reflect the y-intercept over the axis of symmetry. This will give you a third point to include in your graph. Now, sketch the parabola through this new point, the vertex and the y-intercept.