### Example

A printer costs is $65. If x represents the number of printers sold and if y represents the total cost, we obtain the relation *y* = 65*x*. The total cost depends on the number of printers purchased.

A printer costs is $65. If x represents the number of printers sold and if y represents the total cost, we obtain the relation *y* = 65*x*. The total cost depends on the number of printers purchased.