Higher November 2018 Paper 2 Q2
2. Rearrange each of the following to make \(w\) the subject of the formula.
(a) \(\dfrac{7}{w} = e\) [1]
(b) \(3(w + 5) - f = g\) [3]
| Scheme | Marks | Comments |
|---|---|---|
| \(w = 7/e\) | B1 | CAO. Accept \(7/e = w\) |
| Scheme | Marks | Comments |
|---|---|---|
| \(3w + 15 - f = g\) or \(3w + 15 = f + g\) | B1 | FT until 2nd error occurs |
| \(3w = f + g - 15\) | B1 | |
| \(w = \dfrac{f + g - 15}{3}\) | B1 | Mark final answer |
| (4) |
Notes
Alternative method
| \(w + 5 - f/3 = g/3\) | B1 |
| \(w = g/3 + f/3 - 5\) | B2 |
Mark final answer, if further incorrect manipulation, award final B1 not final B2