[L1] y varies directly as the square of x. Which relation is correct?

[L1] P varies inversely as the square root of Q. Which relation is correct?

[L1] x varies directly as √y and inversely as z³. Which relation is correct?

[L1] P varies directly as Q² and inversely as ∛R. Which relation is correct?

[L2] y ∝ x². If y = 20 when x = 2, find y when x = 3.

[L2] M ∝ √N. If M = 6 when N = 9, find M when N = 25.

[L2] p ∝ 1/√q. If p = 9 when q = 16, find p when q = 36.

[L2] V ∝ 1/W². If V = 18 when W = 2, find V when W = 6.

[L3] m ∝ pw². If m = 12 when p = 3 and w = 2, find m when p = 4 and w = 3.

[L3] E ∝ F²/G. If E = 8 when F = 4 and G = 2, find E when F = 3 and G = 6.

[L3] Time t varies directly as chairs n and inversely as workers p. 3 workers arrange 120 chairs in 2 h. How long for 6 workers to arrange 180 chairs?

[L3] D ∝ ∛E × F². If D = 24 when E = 8 and F = 2, find D when E = 27 and F = 1.

[L4] PQ² = 80. Find P when Q = 10.

[L4] Carpet cost varies directly as diagonal². A 4 m carpet costs RM144. What is the cost for a 6 m diagonal?

[L4] Magnet force varies inversely as distance². The force is 16 N at 3 cm. What is the force at 6 cm?

[L4] Gas pressure varies inversely as volume. Pressure is 900 kPa at 2 m³. Find the pressure at 3 m³.