See attached worksheet. 3 videos to watch

https://www.youtube.com/watch?time_continue=1&v=1in7Zoqh3gw&feature=emb_title

https://www.youtube.com/watch?v=C1-OFLsgnOU&feature=emb_title

https://www.youtube.com/watch?v=3ft96tKF8Fs&feature=emb_title