If f is an explanatory variable and g is the corresponding response variable, which of these would be represented by the vertical axis on a scatterplot?

a. neither f nor g
b. f
c. both f and g
d. g

Explanatory variable(it explains or predicts the response) is the independet variable , so it is represented in the horizontal axis.

Response variable (it responds to the explanatory variable) is the dependent variable, so it is represented on the vertical axis.

Then, the answer is g (the response variable).