Please help. Will give brainliest if it's correct. Also plz don't just use me for points. Actually answer it bc a girl did that to me yesterday and she was rlly annoying.

Will give brainliest b. describe the function over each part of its domain. state whether it is constant, increasing, or decreasing, and state the slope over each part.

Me i’m stuck on all these questions besides the two bottom ones

3questions show how you solved the problem 1. subtract & simplify (–y2 – 4y – 8) – (–4y2 – 6y + 3) 2.multiply and simplify 2x2y3z2 · 4xy4x2 3.multiply and simplify (x – 4) (x2 – 5x – 6)