Key Features of Quadratic Functions

What does it mean if two expressions are equivalent?

• They are both polynomials.

• They have the same coefficients.

• They simplify to the same value.

• They have the same variables.

What is the result of distributing -3/2 to 4x in the expression?

• -6x

• 12x

• 6x

• -12x

How do you find the value of a function at a specific point?

• Multiply the function by the point.

• Substitute the point into the function.

• Add the point to the function.

• Graph the function and estimate.

What is the value of f(-3) for the function f(x) = -x^2 - 2x + 6?

• 3

• 6

• -3

• 0

What are the x-intercepts of the function f(x) = x^2 - 2x - 8?

• x = -2, x = 0

• x = 2, x = -4

• x = -2, x = 4

• x = 0, x = -8

What is the domain of any quadratic function?

• Numbers greater than zero

• All negative numbers

• All real numbers

• All positive numbers

What does the vertex of a parabola represent?

• The highest or lowest point on the graph

• The point where the graph crosses the y-axis

• The point where the graph crosses the x-axis

• The middle point of the graph

What is the axis of symmetry in a quadratic graph?

• The line connecting the x-intercepts

• The line connecting the y-intercepts

• A horizontal line that cuts the graph into two equal parts

• A vertical line that cuts the graph into two equal parts

If a quadratic graph has a maximum point, what can be said about its range?

• Y values are greater than or equal to the maximum point

• Y values are less than or equal to the maximum point

• Y values include all real numbers

• Y values are only positive

How do you determine the x-intercepts of a quadratic function from its graph?

• Find the highest point of the graph

• Find where the graph is widest

• Find where the graph touches the y-axis

• Find where the graph touches or crosses the x-axis