When the bivariate data are the result of two quantitative variables, it is customary to express the data mathematically as ordered pairs (x, y). What do the variables x and y represent?

The variables x and y represents the input variable and y represents the output variable.

Step-by-step explanation:

Consider the provided information.

When the bivariate data are the result of two quantitative variables, it is customary to express the data mathematically as ordered pairs (x, y),

In mathematics or algebra x is the input variable or we can say that the independent variable.

y is the output variable or we can say that the dependent variable.

Therefore, the variables x and y represents the input variable and y represents the output variable.