Select the correct answer.Which relation is a function? A. x y4 -25 -36 -27 -3 B. x y3 102 203 304 40 C. x y-5 2-5 3-10 4-10 5 D. x y10 1520 258 3020 35
Question
Solution 1
A function is a relation in which each input (x-value) has exactly one output (y-value). This means that no two pairs have the same x-value.
Let's examine each option:
A. x y 4 -2 5 -3 6 -2 7 -3
Here, the x-values 4 and 5 are repeated, so this is not a function.
B. x y 3 10 2 20 3 30 4 40
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