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toxsicity
26.02.2021 •
Mathematics
Which set of ordered pairs represents a function? 1 point A. (-2, 1), (0, 1), (1, -2), (3, 4) B. (-1, 5), (-2, 3), (-2, 1), (-3, -1) C. (12, 36), (9, 27), (-6, 30) (9, 18) D. (3, 17), (-2, 11), (1, 8), (3, 5)
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Ответ:
Only A is a function
Step-by-step explanation:
In order to have a function each value of x must pair with exactly ONE value of y
In A, each x pairs with one y, so we have a function
In B, notice that -2 pairs with 3 and 1, so we do not have a function
In C, notice that 9 pairs with 27 and 18, so we do not have a function
In D, notice that 3 pairs with 17 and 5, so we do not have a function
Ответ: