Please help me this is timed. will give brainliest

Find an equation of the line perpendicular to the graph of 28x-7y=9 that passes through the point at (4,1)

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.

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?