Functions

What is the domain?

• x = 2

• All real numbers

• y = 2

• none of these

What is the RANGE?

• {-3, 3]
• all real numbers
• [-4, 5]
• [-4, ∞)

What is the DOMAIN?

• [0, ∞)
• (-∞, 0)
• All real numbers
• {0, 1, 2, 3, 4,...}

What is the range of the function?

• [-1, +∞)
• (-1,1)
• [1.5, +∞)
• (-2, 2)

What is the range? 

• [-∞, +∞]
• [-2, 2]
• (-∞, ∞)
• [0, 2]

Does the graph represent a function?
If you have an x value that has 2 "y" values it is NOT a function! 

• Yes, because the vertical line test shows there are no repeating input values
• No, because the vertical line test shows there are repeating input values

Which graph does NOT pass the vertical line test?

• Graph 1
• Graph 2
• Graph 3
• Graph 4

Is the relation shown a function?

• No, because the x-value 11 is paired with 5 and 8.

• Yes, because each x-value has only one y-value paired with it.

Find the Range.

• (-∞, +∞)

• (0, 11)

• [0, ∞)

• (0, ∞)

Find the Domain.

• (-∞, +∞)

• (0, 11)

• [0, ∞)

• (0, ∞)