Functions Review

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• yes, it is a function
• no, it is not a function

• {0, 2, 9}
• {-8, 1, 5}
• 0 ≤ x ≤ 9
• -8 ≤ y ≤ 5

• {-5, 0, 2, 7, 9}
• {-7, 0, 1, 4, 6}
• -5 ≤ x ≤ 9
• -6 ≤ y ≤ 6

• {-5, 1}
• {-4, 4}
• -5 ≤ x ≤ 1
• -4 ≤ y ≤ 4