Unit 1: Quiz 1 Functions and their Inverses

What is the domain and range of the function f(x)=2^(x-4)+5?

• D: (-∞, ∞)
  R: [4, ∞)
• D: (-∞, ∞)
  R: (-∞, ∞)
• D: (-∞, ∞)
  R: [5, ∞)
• D: (-∞, ∞)
  R: (∞, 5]

Find the Domain and Range for the graph.

• D:(-∞, ∞)
  R:(-∞, ∞)
• D:(-∞, ∞)
  R:[-4, ∞)
• D: [-4, ∞)
  R:(-∞, ∞)
• D:(-4, ∞)
  R:(-∞, ∞)

What is the equation that the inverse will reflect across?

• y = x
• y = 0
• x = 0
• Potato

Will the inverse of this function be a function?

• Yes
• No
• No way to tell

What is the DOMAIN of the function?

• All Real Numbers

• x ≤ 4

• x > 4

• 0 ≤ x ≤ 4

Evaluate f(-5)

• 0
• 2
• 5
• -4

Which of the following is NOT TRUE about inverse functions?

• Inverse functions are reflections of each other over the line y = x.

• You find the inverse by switching x and y in the equation.

• The domain of a function always becomes the domain of its inverse.

• The domain of a function always becomes the range of its inverse.

What is the best description?

• They are both functions, but not inverse functions.

• They are inverse functions.

• They are reflected over y=x, but they are not both functions.

• They are not reflected over y=x, and they are not both functions.

Which is f ^-1(x)?

• f ^-1(x) = 5x + 3

• f ^-1(x) = 5x - 3

• f ^-1(x) = 5x - 15

• f ^-1(x) = 1/5(x) + 3/5