how to tell if a equation is a function?

Determine if the equation represents a function

A function is an equation that has only one answer for y for every x. A function assigns exactly one output to each input of a specified type. It is common to name a function either f(x) or g(x) instead of y. f(2) means that we should find the value of our function when x equals 2.

Master Determine if the equation is a function or not

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