Algebra 1 Functions Review

What is the definition of a function?

• Has inputs and outputs

• Inputs have different outputs every time

• x-values and

  y-values

• Every input has only one output

Tags

CCSS.8.F.A.1

If f(x) = 2x + 1, find f(1).

• f(1) = 1

• f(1) = 4

• f(1) = 0

• f(1) = 3

Tags

CCSS.HSF.IF.A.2

• 13

• 8

• 16

• answer not here

Tags

CCSS.HSF.IF.A.2

Is this a function or not a function?

• Function
• Not a Function

• previous term

• first term

• common difference

• the sequence contains only negative numbers

Tags

CCSS.HSF.BF.A.2

Which of the following is a function?

• 
• 
• 
• 

• Function
• Not a Function

Is this table a function?  Why?

• Yes, because none of the inputs repeat.
• Yes, because the inputs repeat but have the same output.
• No, because the inputs repeat and have different outputs.

Tags

CCSS.8.F.A.1

Is the graph a function?  Why?

• Yes, it's a perfect circle.
• No, if I draw a vertical line, it crosses twice.
• Yes - if I draw a vertical line, it crosses only once.
• No - it's a perfect circle.

What is the common difference of the sequence below?

6, 9, 12, 15, ...

Hint: Common difference means the ADDING pattern

• 3

• 6

• 9

• 12

Tags

CCSS.HSF.BF.A.2