No, a function must be a relation although a relation need not be a functions.
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No. A relation is not a special type of function.
The set of output values of a function or relation is the range
A function is a special type of relation. So first let's see what a relation is. A relation is a diagram, equation, or list that defines a specific relationship between groups of elements. Now a function is a relation whose every input corresponds with a single output.
determine whether each relation is a function y equals -8
If the function is a straight line equation that passes through the graph once, then that's a function, anything on a graph is a relation!