Students are finding it difficult to determine if a certain graph is a function. which is the best strategy for the students to use? a) vertical line test b) horizontal line test c) make a table of values d) passes through the origin

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).