1. The degree is three. It's a cubic. Google that term to find many examples.

2. Partially expand it to see the constant term: (-2)(4)(1) = -8.

3. Use the null factor law to get the x-intercepts. Substitute x = 0 to get the y-intercept (you will, unsurprisingly, y = -8). Be careful with the shape ..... Note that as x --> +oo, y --> -oo and as x --> -oo, y --> +oo.