3.2 Linear Functions

Why is this function linear?

• This is a linear function because it is going up

• This is a linear function because it is a straight line.

• This is a linear function because the line is curved.

• This is a linear function because it keeps going.

Why is this function linear?

• This is a linear function because the y-intercept is (0,2)

• This is a linear function because it forms a curved line.

• This is a linear function because is does not have a constant rate of change.

• This is a linear function because is has a constant rate of change.

Determine if the graph is linear or nonlinear.

• Linear

• Nonlinear

Which of the function(s) above are linear?

• Function I, only

• Function II, only

• Function I and Function II, only

• Function I, Function II, and Function III

Is this graph continuous or discrete?

• discrete

• continuous

Is the graph continuous or discrete?

• discrete

• continuous

What is the domain?

• all real numbers

• 1<x<6

• {1,3,4,6}

• {-2,2,5}

What is the range?

• {-2,2,5}

• {1,3,5,6}

• all real numbers 

• -2<y<5