All those linear equations were just too simple, so why not make them even more simpler. That's direct variation. Then there's scatter plots, which are best done using the appropriate technological apparatus. This should be the easiest lesson this year.
Algebra II 8 (A) analyze data to select the appropriate model from among linear, quadratic, and exponential models;
Algebra II 8 (B) use regression methods available through technology to write a linear function, a quadratic function, and an exponential function from a given set of data; and
Algebra II 8 (C) predict and make decisions and critical judgments from a given set of data using linear, quadratic, and exponential models.