Higher November 2022 Paper 5 Q7
7 The diagram shows a straight line crossing a pair of parallel lines.
Not to scale
Find the value of \(y\).
You must show your working. [5]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| 103 with correct working | 5 | B3 for \(x\) = 42 or M2 for 4\(x\) = 180 – 35 + 23 oe or 3\(x\) – 23 = 103 or better or M1 for 3\(x\) – 23 + \(x\) + 35 = 180 oe A1 for \(x\) = 42 AND M1 for 3 × their \(x\) – 23 or their \(x\) + 35 If 0 or 1 scored, instead award SC2 for answer 103 with no or insufficient working If 0 scored, instead award SC1 for [\(x\) =] 42 | “Correct working” requires evidence of at least M2 or M1M1 Accept equivalents for M2 e.g. (180 – 35 + 23) ÷ 4 if no algebra seen Accept e.g. 3\(x\) – 23 and \(x\) + 35 = 180 Using trial, allow correct substitution into 3\(x\) – 23 + \(x\) + 35 to imply M1 if 180 also stated SC marks may be seen on diagram |