Looks like they are listing videos for you to watch on the left hand column, and then wanting for you to describe the listed musical concepts for each example.
Manual copy and paste is a pain. Is there an online copy of this work sheet?
Answer:
b=−400
Explanation:
Now we know the slope of the line is \greenD{740}740start color #1fab54, 740, end color #1fab54 and the yyy-intercept is (0, \maroonD{-400})(0,−400)left parenthesis, 0, comma, start color #ca337c, minus, 400, end color #ca337c, right parenthesis, so we can write the equation of that line: