Quadratic Functions Vocabulary

Front

What is the Axis of Symmetry in a parabola?

Back

The line through the parabola so that each side is a mirror image.

Front

What is the vertex of a parabola?

Back

The highest or lowest point of a parabola.

Front

What is the maximum of a quadratic function?

Back

The highest point (vertex) on a graph when a parabola opens down; the point where the graph changes from increasing to decreasing.

Front

What is the vertex form of a quadratic function?

Back

y = a(x - h)² + k.

Front

How do you identify the vertex of a parabola?

Back

The vertex is the point (h, k) in the vertex form of the equation.

Front

What does it mean if a parabola opens upwards?

Back

The vertex is the lowest point of the graph.

Front

What does it mean if a parabola opens downwards?

Back

The vertex is the highest point of the graph.

Front

What is the standard form of a quadratic function?

Back

y = ax² + bx + c.

Front

What is the factored form of a quadratic function?

Back

y = a(x - r₁)(x - r₂), where r₁ and r₂ are the roots.

Front

What are the roots of a quadratic function?

Back

The x-values where the graph intersects the x-axis.