Foundation June 2018 Paper 1 Q30
30 \(y\) is inversely proportional to \(x\).
Complete the table. [2 marks]
| \(x\) | 12 | 6 | |
|---|---|---|---|
| \(y\) | 4 | 8 |
| Answer | Mark | Comments |
|---|---|---|
| \((x =)\) 3 and \((y =)\) 2 in correct positions | B2 | B1 \(y = \dfrac{24}{x}\) or \(4 = \dfrac{k}{6}\) or \(k = 24\) oe or \((x =)\) 3 in correct position above 8 or \((y =)\) 2 in correct position below 12 |
Additional guidance
| \(y = \dfrac{1}{kx}\) or \(4 = \dfrac{1}{6k}\) oe followed by \(k = \dfrac{1}{24}\), with no or incorrect values in table | B1 |