4400 Higher November 2008 Paper 4 Q1
1 The diagram shows a shape, \(PQRSTU\).
All the corners are right angles.
The lengths of four of the sides are given in terms of \(a\) and \(b\).
Find an expression, in terms of \(a\) and \(b\), for
(i) \(PU\), (1)
(ii) \(PQ\). (2)
| Scheme | Marks |
|---|---|
| (i) Answer: \(3a + b\) | B1 |
| (ii) Answer: \(2a + 3b\) | B2 |
| (3) | |
| (3 marks) |
Notes
B1: oe
B2: B1 each term
or if unsimplified: \(3a + 2b - a + b\) or \(3a + 2b - (a - b)\): B2
\(3a + 2b - a - b\): B1 not ISW