FM2 Unit 2 Review (Relations/Functions, Domain/Range, etc.)

FM2 Unit 2 Review (Relations/Functions, Domain/Range, etc.)

Let's review what we've covered in Unit 2 so far!

Relation

A relation is a set of pairs of input and output values.

Function

A function is a special type of relation in which each input maps to one and only one output.

Multiple Select

Which of the following relations are also functions?

Multiple Choice

Is the graph at the left a function?

• Yes - it passes the Vertical Line Test.

• No - It does not pass the Vertical Line Test.

• Yes - it does not pass the Vertical Line Test.

• No - it passes the Vertical Line Test.

Domain

The set of all x-values (input) of a relation.

Range

The set of all y-values (output) of a relation.

Function Notation

Function notation is a way to name a function that is defined by an equation.

Function notation is used to evaluate a function for a given value.

Multiple Choice

If

 $f\left(x\right)=3x^2-x+6$ , what is  $f\left(2\right)$  ?

• 40

• 28

• 16

• 4

Multiple Choice

If  $f\left(a\right)=2-3a$  , what is  $f\left(-4\right)$  ?

• -10

• 2

• 4

• 14