Unit 2 Day 1 Relations: https://www.youtube.com/watch?v=nh0_7Sqp_SM
Unit 2 Day 2 Functions: https://www.youtube.com/watch?v=UyngsCRNZTw
Unit 2 Day 3 Functions Day 2: https://www.youtube.com/watch?v=JKECytuc6HQ
Unit 2 Day 4 Graphing Linear Functions: https://www.youtube.com/watch?v=bvfxAKAeyGE