Q. Which of the following is not a function?
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A.
{(1,2), (1,3)}
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B.
{(2,3), (3,4)}
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C.
{(4,5), (5,6)}
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D.
{(6,7), (7,8)}
Solution
A function cannot have two different outputs for the same input. The first option has two outputs for input 1.
Correct Answer:
A
— {(1,2), (1,3)}
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Q. Which of the following values satisfies the inequality: 4x + 1 ≤ 13?
Solution
4x ≤ 12 => x ≤ 3. The value 3 satisfies the inequality.
Correct Answer:
B
— 3
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