QSE #2 Practice Test

Front

What are the x- and y-intercepts?

Back

The x-intercept is the point where the graph crosses the x-axis (y=0), and the y-intercept is where it crosses the y-axis (x=0).

Front

How do you find the x-intercept of a function?

Back

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

Front

How do you find the y-intercept of a function?

Back

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

Front

What is the axis of symmetry in a quadratic function?

Back

The axis of symmetry is a vertical line that divides the parabola into two mirror images, given by the formula x = -b/(2a).

Front

What is the domain of a function?

Back

The domain is the set of all possible input values (x-values) for the function.

Front

What is the range of a function?

Back

The range is the set of all possible output values (y-values) for the function.

Front

How do you express domain and range in interval notation?

Back

Use parentheses for open intervals and brackets for closed intervals. For example, (1, 5] means x is greater than 1 and less than or equal to 5.

Front

What is the quadratic formula?

Back

Front

What does it mean if a quadratic equation has complex roots?

Back

It means the graph does not intersect the x-axis, and the roots are in the form of a + bi.

Front

What is the vertex of a parabola?

Back

The vertex is the highest or lowest point of the parabola, found using the formula x = -b/(2a) to find the x-coordinate.