Step 1 ------ Select Estimate Equation Option from Quick Option on the
Menu Bar

Step2 ----- Type the dependent variable (1st item), constant term (C)
and the independent variable(s) (3rd, 4th.... nth item) on the Equation
Specification Box. Then choose "Least Squares" in the Estimation Settings"
Box.

* The graph shown above is the example of regression being run on GDP at constant price(GDPc). The other regression can be done by yourself.