function notation wt

What is the definition of a function?

• Has inputs and outputs

• Every input has only ONE output

• Inputs have different outputs every time

• x-values and y-values

Is the relation a function? Why?

• Yes, because the x-value 11 has two y-values paired 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 paired with it.

• No, because each x-value has only one y-value paired with it.

Is this mapping a function or not a function? 

• Function
• Not a Function 

Is this table a function or not a function? 

• Function
• Not a Function

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

For the function f(x) = -3(x-1) find f(0).

• 0
• -3
• 3
• -1

What is f(1)?

• 1
• 5
• 0
• 4

What is f(8)? 

• 8
• 0
• 3
• -2

f(x) is the same thing as ______.

• y
• x
• input
• an equation

Sophie has $14 and plans to save $5 each week until she has $64 she needs for a new jacket. What is the equation to solve for Sophie to know how many weeks she will need to save?

• 64 = 14x + 5

• 5x + 64 = 14

• 5x + 14 = 64

• 5x - 14 = 64