Plz help me without link or files plz and thank you

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

If you are just building your payment history, how many points from a perfect score will you possibly miss?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.