Unit 3 Review

Front

What is the y-intercept of a quadratic function?

Back

The y-intercept is the point where the graph intersects the y-axis, represented as (0, y).

Front

How do you identify the range of a quadratic function from its graph?

Back

The range is the set of all possible y-values that the function can take, often determined by the vertex and direction of the parabola.

Front

What is the x-intercept of a graph?

Back

The x-intercept is the point where the graph intersects the x-axis, represented as (x, 0).

Front

What are the zeros of a quadratic function?

Back

The zeros (or roots) are the values of x for which the function equals zero, corresponding to the x-intercepts.

Front

How many zeros can a parabola have?

Back

A parabola can have 0, 1, or 2 zeros.

Front

What does it mean if a quadratic function has no real solutions?

Back

It means the graph does not intersect the x-axis, indicating that the parabola is either entirely above or below the x-axis.

Front

What is the vertex of a quadratic function?

Back

The vertex is the highest or lowest point of the parabola, depending on its orientation.

Front

How can you find the y-intercept from a quadratic equation?

Back

Set x = 0 in the equation and solve for y.

Front

What is the significance of the direction of a parabola?

Back

The direction (upward or downward) indicates whether the function has a minimum or maximum value.

Front

What is the standard form of a quadratic function?

Back

The standard form is f(x) = ax² + bx + c, where a, b, and c are constants.