The market for labour can be described by two linear equations. Demand is given by P=150 - (1/6)Q and the supply given by P=50 + (1/3)Q

a)Graph the functions and calculate the equilibrium price and quantity

b) suppose a price is estabilished by the government in this market at a price of $120. (This price is above the equlibrium price that you have obtained in part a). Calculate the amount that would be demanded and supplied and then calculate the excess supply of workers

Here is my work so far:

p=150 - (1/6)Q

p=50 + (1/3)Q

150 - (1/6)Q = 50 + (1/3)Q

150 - 50 = (1/3)Q + (1/6)Q

100 = 3/6Q

100 = 1/2Q

200 = Q

Am I on the right track? What should I do next? thanks for any help