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Help please! Picture included about functions. Explain if you can.

Help please! Picture included about functions. Explain if you can.-example-1
User Omricoco
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The definition of a function is a relation where every input (x value) is paired with exactly one output (y-value).

A. Not a function, because you have (300, 9) and (300,7). The x-value 300 is paired with two different y-values, 9 and 7.

B. Not a function. (260, 4) and (260, 2)

C. Is a function

D. Not a function. (225, 4) and (225, 2)
User Hamobi
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