Diana has z gerbils. jackie has 4 times as many gerbils as diana. if w stands for the number of gerbils jackie has, express w in terms of z, and state the independent and e dependent variables in the equation.

Gerbils Diana has = z

Gerbils Jackie has = 4z = w

Hence, w = 4z

Independent Variable is a variable that stands alone and isn't changed by the other variables you are trying to measure.

Hence, the independent variable is z here.

Dependent Variable is something that depends on other factors. 

Hence, the dependent variable is w here.