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Quiz 7A: Relations and Functions
  • 1.
A) 0
B) 3
C) 1
D) 8
  • 2. A relation is a set of _____________.
A) ordered pairs
B) functions
C) frogs
D) y-values
  • 3. Domain is a list of all of the ____ values of a relation or function.
A) x
B) y
C) z
  • 4. Range is a list of all of the ____ values of a relation or function.
A) y
B) x
C) z
  • 5. What is the domain of this function: {(0, 1), (2, 3), (-1, 3), (4, 5)}?
A) {1, 3, 5}
B) {3}
C) {0, 2}
D) {0, 2, -1, 4}
  • 6. What is the range of this function: {(4, 8), (9, 2), (-3, -4)}
A) {4, 9, -3}
B) {8}
C) {(4, 8), (9, 2), (-3, -4)}
D) {8, 2, -4}
  • 7.
A) A
B) C
C) D
D) B
  • 8. Which of the following relations is a function?
A) {(0, 0}, (1, 2), (2, 3)}
B) {(1, 1), (1, 2), (1, 3)}
C) {(0, 0), (0, 1), (1, 2)}
D) {(3, 1), (4, 1), (3, 2)}
  • 9. Which of the following relations is a function?
A) {(1, 2), (-1, 3), (-1, 8)}
B) {(1, 2), (2, 2), (3, 4)}
C) {(0, 4), (5, 6), (5, 8)}
D) {(3,7), (3, 6), (5, 3)}
  • 10.
A) D
B) C
C) A
D) B
  • 11. Given f(x) = 2x + 1, find f(-3).
  • 12.
A) 1
B) 5
C) 3
D) 8
  • 13.
A) A
B) B
C) C
D) D
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