Function Tables and Function vs Non Function

How do you determine if a graph is a function?

• look at the y-values, if they repeat, it's not a function

• Use the "vertical line" test aka "pencil test"

• Look at you x-values, if they repeat it is a function

• Use the horizontal line test

Which ordered pair could you add to the following list of points to create a function?  (3, 5) (4, 9) (2, 5) 

• (3, 7)

• (4, 1) 

• (1, 9)

• (2, 6)

Is the function represented by the table linear or nonlinear?

• Linear

• Nonlinear

Is this function represented by the graph Linear or Nonlinear

• linear

• nonlinear

Is the function represented by the equation linear or nonlinear?

• linear

• nonlinear

Is the function represented by the table linear or nonlinear?

• linear

• nonlinear

Is the function represented by the graph linear or nonlinear

• linear

• nonlinear

Which answer choice is true?

• The table represents a linear function because there is a pattern for the x-coordinates and y-coordinates.

• The table represents a linear function because the ratio of the change in the y value and the change in the x value is constant.

• The table represents a nonlinear function because the ratio of the change in the y value and the change in the x value is not constant.

• The table does not represent a function because there is more than one output for at least one input.

Which equation represents y as a linear function of x?

• y=8x

• x=5

• y=4x²

• y=x³

Which graph is linear?

• A

• B

• C

• D