Foundation November 2017 Paper 1 Q21
21
(a) A graph is drawn below.
Explain how you know that \(y\) is not directly proportional to \(x\). [1]
(b) \(q\) is directly proportional to \(r\).
\(q\) is 68 when \(r\) is 20.
\(q\) is 68 when \(r\) is 20.
Work out \(q\) when \(r\) is 25. [2]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| [Line] does not go through (0, 0) | 1 | Accept origin, O | |
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 85 | 2 | M1 for \(\dfrac{68}{20}\) soi by 3.4 | |