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!
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determine whether each relation is a function y equals -8
Two ways to determine whether the relation is a function is use a mapping diagram or use a vertical line test.
You can use the vertical line test to determine if a relation is a function. It's pretty simple: if there is any part of the graph where there are more than one of the same x-values for different y-values (ex. (3,2), (3,5), and (3,9)), the relation is not a function
No, a function must be a relation although a relation need not be a functions.
No. A relation is not a special type of function.