Answer:
If there is only one output for every input, you have a function. If not, you have a relation. Relations have more than one output for at least one input.
Step-by-step explanation:
The formula y = mx + b is an algebra classic. It represents a linear equation, the graph of which, as the name suggests, is a straight line on the x -, y -coordinate system. Often, however, an equation that can ultimately be represented in this form appears in disguise.
