How to find the slope using the slope intercept form

Well, the slope=intercept form is y = mx + b! 

m is the slope, while b is the y-intercept. You can find the slope by using the rise-over-run method, and you can find the y-intercept by looking where the line crosses over the y-asix.

Would you like to work out a problem so you can understand this better?

So when you multiply j(x) with k(x), the first term will be -x^3. So multiplication.

 I hope this helps