Which ordered pair can be removed so that the resulting graph represents a function (-2, 2) (1, 3) (5, -4) (-4, -4)

Its worth 10000000 points need asap if you answer correctly ill mark brainliest

For the equations below which statement is true ?

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.