Since I really oughn't go out for a drink at mid-day, I hope venting some steam in public will have a purgative effect instead. This is for real. We discuss the need for algebra skills, then move on. Write anything you need to.
Most students just remember 'rise over run'.
Yes, sure, that's close enough. Here, you've written that numerator as a decimal, which is fine but you can write it as a fraction, too. You can write it as a simple fraction. It's two AND a half. Here's one dollar, here's another, here's an extra half-dollar.