Vertex Form

Front

What is the vertex form of a quadratic equation?

Back

Front

How do you find the vertex from the vertex form?

Back

Front

What does the parameter 'a' indicate in the vertex form?

Back

The parameter 'a' indicates the direction and width of the parabola. If 'a' is positive, the parabola opens upwards; if negative, it opens downwards. A larger absolute value of 'a' makes the parabola narrower.

Front

Back

The vertex is (5, -7).

Front

Which equation represents a parabola that opens upwards?

Back

Front

Back

The vertex is (h, k).

Front

Back

Front

Back

The vertex is (4, 8).

Front

What is the effect of changing 'h' in the vertex form?

Back

Changing 'h' shifts the parabola left or right. If 'h' increases, the parabola shifts to the right; if 'h' decreases, it shifts to the left.

Front

What is the effect of changing 'k' in the vertex form?

Back

Changing 'k' shifts the parabola up or down. If 'k' increases, the parabola shifts up; if 'k' decreases, it shifts down.