I. Solve each problem. Show your solutions.

1. If y varies directly as x, nd y = 10 when x = 6, find y when x=5.
2. If r bariles directly sa the cute OF SM and r=15 when s=5, find r when s=8.
3. If y varies inversely as x, and y =24 when x=8, find x when y=10.
4. Y varies inversely (x-3) if y=20 when x=2, find y when x=15.
5. If z varies jointly as x and y and z=12 when x=2 and y=4, find z when x=5 and y=2.
6. If z bariles directly as the square of x inversely as y, and z=50 when x=5 and y=2, find z when x=4 and y=5.