Exploring Domain and Range in Functions

What does the domain of a function represent?

• The allowable Y values

• The minimum value of the function

• The allowable X values

• The maximum value of the function

What is the range of a function?

• The minimum Y value

• The maximum X value

• The collection of all Y values

• The collection of all X values

For a parabola, what is the domain?

• Numbers between -1 and 1

• All real numbers

• All positive numbers

• All negative numbers

In the example of the parabola, what is the range?

• From -4 to 0

• From -infinity to 4

• From -4 to infinity

• From 0 to infinity

How does a hole in the graph affect the domain?

• It has no effect on the domain

• It doubles the value at the hole

• It excludes the value at the hole

• It includes the value at the hole

What is the range of a graph with a hole at y = -4?

• From -4 to infinity excluding -4

• From -4 to infinity

• From -4 to 0

• From -infinity to -4

In a graph with a hole at x = 1, what is the domain?

• From 1 to infinity

• From -infinity to 1

• From -infinity to 1 and from 1 to infinity

• From -infinity to infinity

If a graph has a hole at y = -3 but is covered on one side, what is the range?

• From -4 to infinity including -3

• From -4 to infinity excluding -3

• From -3 to infinity

• From -4 to infinity

What is the value of f(0) in the final example?

• 0

• Undefined

• -4

• 3

For which x value does the function equal -3 in the final example?

• 1

• -1

• 2

• 0