Quadratic Function Vocabulary

Front

What are the roots of a quadratic graph?

Back

Roots are where the graph crosses the x-axis.

Front

What does the 'a' in the quadratic function f(x) = ax² + bx + c determine?

Back

The direction of the parabola: upward if a > 0, downward if a < 0.

Front

What does the 'c' in the quadratic function f(x) = ax² + bx + c determine?

Back

The y-intercept of the parabola.

Front

What is the equation for the axis of symmetry in a quadratic function?

Back

x = a number.

Front

Which form of the equation is easiest to use to find the solutions of a quadratic function?

Back

Factored form.

Front

What is a quadratic function?

Back

A function of the form f(x) = ax² + bx + c, where a ≠ 0.

Front

What is the vertex of a quadratic function?

Back

The highest or lowest point of the parabola, depending on the direction it opens.

Front

What is the standard form of a quadratic function?

Back

f(x) = ax² + bx + c.

Front

What is the factored form of a quadratic function?

Back

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

Front

What is the significance of the discriminant in a quadratic equation?

Back

The discriminant (b² - 4ac) determines the nature of the roots.