HELP ME PLEASE
40 POINTS IN FULL

Which is the equation of a line perpendicular to the line with the equation 3x+4y=8

Which inequalities can be used to find the solution set of the following inequality? check all that apply. |2x – 5| (2x – 5) (2x + 5) –(2x – 5) –(2x + 5)

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how