Simple Functions

Determine which rule best represents the expression the function machine used.

• X times 9

• X plus 10

• X minus 9

• x divided by 9

What do you call the numbers that come out of the function machine?

• input

• function

• output

• machine

What is the rule of the function machine?

• ‘Multiply by 3 then take away 4’

• ‘Multiply by 4 then take away 6’

• ‘Multiply by 6 then take away 4’

• None of the above

What is the equation that best represents the graph?

• y=2^y

• y=2^x

• y=2^-x

• y=x²

Given y=3^x determine the y-intercept 

• (0,1)

• (0,3)

• No Y-intercept

• y=1

What function is present? 

• Absolute Value

• Exponential Decay

• Linear Equation

• Exponential Growth

Identify the y-intercept (initial value when x=0) in the function f(x)=13(.27)^x

• (.27)^x

• .27

• 13

• 3.51

Using the parent function y=3^x what would the graph of y=3^x+1 look like?

• Horizontal Shift to the right 1 unit

• Horizontal shift to the left one unit

• Vertical shift one unit up

• Vertical shift one unit down

This is an example of.....

• exponential decay

• exponential growth

• constant change

• a linear function

What is the y-intercept of the function?

• 2

• 3

• 1

• -2