Is it possible to have a regression analysis with 1 dependent and only 1 independent variable?
The Answer is YES, it is possible using Simple Linear Regression.
Please refer this link to know how to perform this analysis in SPSS.
You can also do this analysis in MS Excel if you do not have SPSS. Please refer this link
I think by now you might be familiar with simple linear regression but I'm writing this answer just because I hope the other new members to this topic could find this useful.