Graphing Quadratics in Vertex Form

Front

What are the green dots called?

Back

roots or x-intercepts

Front

If given the equation y = 3(x + 5)² - 4, what is the vertex of the parabola?

Back

(-5, -4)

Front

Given: y = 2(x - 5)² + 6, the vertex is?

Back

(5, 6)

Front

A parabola is upside-down when 'a' is:

Back

negative

Front

y = ax² + bx + c is:

Back

a quadratic equation in standard form.

Front

What is the vertex form of a quadratic equation?

Back

y = a(x - h)² + k, where (h, k) is the vertex.

Front

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

Back

The direction and width of the parabola.

Front

How do you find the axis of symmetry from the vertex form?

Back

x = h, where (h, k) is the vertex.

Front

What is the effect of a positive 'a' value on the parabola?

Back

The parabola opens upwards.

Front

What is the effect of a negative 'a' value on the parabola?

Back

The parabola opens downwards.