What does the combine place value strategy make it easier to find the difference

Which of the following points is collinear with (-2,1) and (0,3)

Ihave trouble finding the nth term of a linear sequence

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.