PreCal Review Unit 1 Day 1-3

Is the relation a function? Why.

• Yes, because the x-value 11 has two y-values pair with it.
• Yes, because each x-value has only one y-value paired with it.
• No, because the x-value 11 has two y-values pair with it.
• No, because each x-value has only one y-value paired with it.

Does this graph represent a function?

• Function
• Not a Function

Does this table represent a function?

• Function
• Not a Function

Tags

CCSS.8.F.A.1

Does this mapping diagram represent a function?

• No, because there are repeating input values
• Yes, because there are no repeating input values

What is the equation of this graph?

• f(x) = (x + 2)² - 2
• f(x) = (x - 2)² - 2
• f(x) = |x + 2| - 2
• f(x) = |x - 2| - 2

• A
• B
• C
• D

All of the y values or outputs are called what?

• Domain
• Range
• Relation
• Function

All of the x values or inputs are called what?

• Domain
• Range
• Relation
• Function

A function is: f(x)=7+3x
Find f(10)

• 1
• 37
• 317
• 20

Does this graph represent a function?

• Function
• Not a Function