So we know h is hours, what is T? Obviously temperature. Let's try plugging in a few values. at h=0, or hours since midnight, which is a fancy way of saying midnight, T = 50, so that meeans it starts at 50 degrees. What about at 1 hour after midnight? or h=1 (or 1 AM) well, T = 50-2(1) = 48. so 48 degrees. You can keep doing this, and what happens?
Well T keeps going down by 2 every time h goes up by 1. Well if T is temperature and h is hours since 12 AM we just replace the words. Temperature keeps going down by 2 (degrees) every time hours since midnight goes up by 1. You can probably write that a bit more well worded, but I wanted to show how you can get the answer from seeing what happens to the variables. Though let me know if you don't get it.
