Direct cube-root relationship

Direct cube-root relationship

Secondary 2
6 marks
TGM Original Questions

Optional extension

It is given that \(y\) is directly proportional to \(\sqrt[3]{x}\), and \(y=2\) when \(x=8\).

  1. Express \(y\) in terms of \(x\).[2]
  2. Hence find
    1. \(y\) when \(x=-125\), and[2]
    2. \(x\) when \(y=4\).[2]

Solution:

Solution locked

Sign in to view the step-by-step solution

Please join our E Math programme to search for similar questions for more practice.

E Math Tuition
Answer:(a) \(y=\sqrt[3]{x}\) (b)(i) \(y=-5\) (ii) \(x=64\).

Need help? Join our JC Math tuition classes.

Learn more