ECZ 2019 · GCE Paper 1 — Variation
y varies directly as x and inversely as the square of z. Given that y = 10 when x = 32 and z = 4, find the value of k, the constant of variation.
- A. 5
- B. 10
- C. 2
- D. 8
Verified working — step 1
The relationship is y = kxz². Substituting: 10 = 32k4² = 32k16= 2k, so k = …The full step-by-step working and final answer are included with Premium — checked against ECZ marking standards.
Original examination question © Examinations Council of Zambia. Worked solution and commentary © G12 Titan — not to be reproduced without permission.
Have a different question?
Search it — if it is from a past paper or a school mock, chances are we have it worked out, or one that uses the same method.
Search any past-paper question