Activity 2. A. Solve each problem involving direct, inverse, joint and combined variation. Find first the constant of variation, write the equation of variation, then Solve for the values indicated. 1. If x varies directly as y, and x 27 when y = 9, find x when y = 2. 2. If y varies inversely as x, and y = 23 when x = 8, find y when x = 4. 3. x varies jointly as w, y and z. If x = 18 when w = 2, y = 6 and z = 5, find x when w = 5, y = 12 and z = 3 4. If z varies inversely as a' and z = 9 when x = = , find s when x = =. 5. Suppose p varies directly as band inversely as s'. If p = = when b = 6 and s = 2, find b when p = 6 and s = 4. 6. If x varies inversely as y, and x = 3 when y = 8, find u when x = 4. 7. a varies jointly as x and y. 2 = 60 when x = 3 and y =4. Find u when = = 80 and x = 2. 8. If y varies directly as x, and y = 6 when x = 10, find x when y = 18. 9. If x varies directly as the square of y and inversely as z and x = 12 when y = 3 and z = 6, find & when y = 9 and z = 6. 10. If y varies directly as x, and y = - 4 when x = 32, find y when x = 3