What are the slope and the y-intercept for -2/3,2c]3/2,3d]2/3,-2

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.

What is the equation of a vertical line passing through the point (−5, −1)? y = −5 y = −1 x = −5 x = −1

Which of the following quartic functions has x = –1 and x = –2 as its only two real zeroes?