GCSE Maths Practice: direct-proportion

Question 10 of 10

Identify statements showing direct proportion.

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\( \begin{array}{l}\text{Which statements represent direct proportion?}\end{array} \)

Select all correct options:

\( \text{If x doubles, y doubles (y ∝ x).} \) \( \text{If x triples, y is divided by 3.} \) \( \text{y = 4x} \) \( \text{y = 12/x} \)

Check linear increase of y with x.

Check if y increases linearly with x.