vertex , -intercept 2
The vertex is on the axis of symmetry at
The -intercept at is lower than the vertex, so the parabola opens downward.
The -intercept is 3 units to the left of the axis of symmetry at . Parabolas are symmetric about the axis of symmetry so there must be a point on the parabola 3 units to the right of the axis of symmetry also at . So we have 3 points:
Plot the three points and draw a downward opening parabola. Make sure that the vertex is the highest point of the graph.
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