Identifying Functions and Linear vs Non-Linear

Check the correct answers: In order to be a linear function:

• It's graph must have a straight line

• It must pass a polygraph test

• Each x-value has only one y-value

• A parabola is a Linear Function

Which of these functions are linear?

Select two answers.

• 
• 

Which of the following functions are non-linear? Select the correct answers

• y = 3x + 2 

• x = 4 - 3y 

Find the rate of change

• 1

• 2

• 11

• Not a constant slope/Non-Linear

Sonia has $40 in her lunch account and pays $2 each day to eat lunch.

• Linear

• Non-linear

Is this image Linear or nonlinear?

• linear

• nonlinear

Is this function Linear or nonlinear?

• linear

• nonlinear 

Which statements below determine when a function is linear? Select two answers

• The function can be represented by an equation of the form y = mx + b.

• The rate of change is always constant.

• The initial value must be at 0

• The graph of the function could be a vertical line.

• The graph can contain curves.

A holiday meal costs $12.50 a person plus a delivery fee of $30.

• Linear

• Non-Linear

The amount of minions under Gru's care triples every day.

• linear

• nonlinear