Relation where there is exactly one output for each input A. Domain
B. Range
C. Relation
D. Function

D.Function

Step-by-step explanation:

When each input value has one and only one output value, that relation is a function. Functions can be written as ordered pairs, tables, or graphs. The set of input values is called the domain, and the set of output values is called the range.

a)(x-2)^2+(y-1)^2=9

step-by-step explanation:

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