Help me plz too much math in my head plz...lol..

Find the equation of the line with slope =8 and passing through (6,53) write your equation in the form y=mx+b

Cd is the perpendicular bisector of both xy and st, and cy=20. find xy.

Amass weighing 16 pounds stretches a spring 8/3 feet. the mass is initially released from rest from a point 2 feet below the equilibrium position, and the subsequent motion takes place in a medium that offers a damping force that is numerically equal to 1/2 the instantaneous velocity. find the equation of motion if the mass is driven by an external force equal to f(t)=cos(2t).