a. Each domain value x has a unique range value y. This is a Function.
Not a function?
Remember for a relation to be a function, each x or domain has a unique y or range value.
b. Each domain value x has a unique range value y. This is a Function.
c. Each domain value x has not a unique value y. Domain values 3 and 4 have repeated range values. This is not a function.
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