Determine Whether the Relation Is a Function

Determine whether the relation is a function.

• Yes
• No

What is the definition of a function?

• Has inputs and outputs
• Every input has only ONE output
• Inputs have different outputs every time
• x-values and y-values

Which of the following is NOT a function?

• y = 4
• x = 3
• y=2x
• y=x

• Function
• Not a Function

• Function
• Not a Function

• Function
• Not a Function

Is the graph pictured a function?

• Yes
• No

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

What is the range of the graph?

• 1 ≤ x ≤ 5
• 1 < x < 5
• 1 ≤ y ≤ 5
• 1 < y < 5

What is the domain of the graph?

• 1≤ x ≤ 4
• 1 < x < 4
• 1≤ y ≤ 4
• 1 < y < 4