Students are divided into 2 teams. One person from each team goes to the board, when you put a question up they hit the correct answer. First person to get it correct gets a point. This is best down with a fly swatter. Make sure you set up rules for the game. My rules are no blocking your opponent, pick one answer and commit to it, and hands behind your back until I put the problem up.
The students love this!
x and y intercept
linear and quadratic parent functions
slope intercept form