SBAC Test- Absolute Value and Quadratic Inequalities

Front

What is the definition of absolute value?

Back

The absolute value of a number is its distance from zero on the number line, regardless of direction. It is denoted as |x|.

Front

How do you solve a quadratic inequality?

Back

To solve a quadratic inequality, first solve the corresponding quadratic equation to find the critical points, then test intervals between these points to determine where the inequality holds true.

Front

What is the standard form of a quadratic equation?

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 parabola?

Back

The vertex of a parabola is the highest or lowest point on the graph, depending on the direction it opens.

Front

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

Back

To find the y-intercept of a quadratic function, set x = 0 and solve for y.

Front

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

Back

Front

What is a maximum value in the context of quadratic functions?

Back

A maximum value is the highest point on the graph of a quadratic function that opens downwards.

Front

What is a minimum value in the context of quadratic functions?

Back

A minimum value is the lowest point on the graph of a quadratic function that opens upwards.

Front

How do you express a quadratic inequality graphically?

Back

A quadratic inequality can be expressed graphically by shading the region above or below the parabola, depending on the inequality sign.