9.3 Evaluating Quadratic Functions

Front

What is a quadratic function?

Back

Front

How do you evaluate a quadratic function at a specific point?

Back

To evaluate a quadratic function at a specific point, substitute the value of x into the function and simplify.

Front

What is the standard form of a quadratic function?

Back

Front

What does the graph of a quadratic function look like?

Back

The graph of a quadratic function is a parabola, which opens upwards if a > 0 and downwards if a < 0.

Front

What is the vertex of a quadratic function?

Back

Front

How do you find the x-intercepts of a quadratic function?

Back

Front

What is the quadratic formula?

Back

Front

What is the discriminant in a quadratic equation?

Back

Front

What does it mean if the discriminant is positive?

Back

If the discriminant is positive, the quadratic equation has two distinct real roots.

Front

What does it mean if the discriminant is zero?

Back

If the discriminant is zero, the quadratic equation has exactly one real root (a repeated root).