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Question 30 of 45

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Mathematics Subtest

Competency 3—Knowledge of algebraic thinking and the coordinate plane

Which of the following relations is a function?

Each response is a pair of vertical ovoids, side by side. The left ovoid is labeled Input, and the right ovoid is labeled Output. Each has a set of numbers arranged inside in a vertical column. Arrows indicate a mapping from the Input numbers to the Output numbers.

Choose an answer

The input numbers are 3, 6, 9, and 12. The Output numbers are 1, 2, 3, and 4. Input 3 maps to output 1. Input 6 maps to output 1 and output 2. Input 9 maps to output 4. Input 12 maps to output 4.
The input numbers are 1, 5, and 13. The Output numbers are 2, 3, and 4. Input 1 maps to output 2. Input 5 maps to output 2. Input 13 maps to output 4.
The input numbers are 2, 4, 6, and 8. The Output numbers are 2, 5, 8, and 9. Input 2 maps to output 2 and output 5. Input 4 maps to output 5. Input 6 maps to output 5 and output 8. Input 8 maps to output 9.
The input numbers are 3, 8, and 15. The Output numbers are 5, 11, and 12. Input 3 maps to output 11. Input 8 maps to output 5. Input 15 maps to output 11 and output 12.

Enter to expand or collapse answer.Answer expanded: Correct Response: B.

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General Knowledge

Question 30 of 45

Mathematics Subtest

Competency 3—Knowledge of algebraic thinking and the coordinate plane