Linear Functions

Is this graph a function or not a function? 

• Function 
• Not a Function

Is this mapping 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

Which set of values is a function?

• (9,5) (10,5) (9,-5) (10,-5)
• (3,4) (4,-3) (7,4) (3, 8)
• (6,-5) (7, -3) (8, -1) (9, 1)
• (2, -2) (5, 9) (5, -7) (1, 4)

For the function {(0,1), (1,-3), (2,-4), (-4,1)}, write the domain and range.

• D: {1, -3, -4,}
  R: {0, 1, 2, -4}
• D: {-4, 0, 1, 2}
  R:{-4, -3, 1}
• D: {0, 1, 2, 3, 4}
  R:{1, -3, -4}
• D: {0, 1, 2, -4}
  R: {1, -3, -4, 1}

Which of the following functions are non-linear?

Select the correct answers

• y = 3x + 2 

• x = 4 - 3y 

• y = x^2 + 3x + 1 

Is function represented by the table linear or nonlinear?

• linear
• nonlinear

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

• Linear
• Non-linear

Which function is linear?

• y = 2x + 4
• y = 2x² + 4
• y = 2x(4 − 3x)
• xy = 15

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.