Intermediate June 2017 Unit 1 Q1
1.
(a) Write down the next two numbers in the following sequence. [2]
35, 25, 16, 8, …………… , ……………
(b) Find the value of \(2x + 7y\) when \(x = -3\) and \(y = 10\). [2]
(c) Simplify the expression \(8k + 3m - 2k - 8m\). [2]
| Scheme | Marks | Comments |
|---|---|---|
| 1 and −5 | B2 | B1 for 1. B1 F.T. for ‘their 1’ – 6. |
| Scheme | Marks | Comments |
|---|---|---|
| – 6 + 70 | B1 | B1 for sight of – 6 OR 70 (but not −70). B0 for −6x + 70y. |
| = 64 | B1 | C.A.O. Mark final answer. |
| Scheme | Marks | Comments |
|---|---|---|
| 6k – 5m | B2 | Must be an expression for B2. B1 for sight of (+)6k OR sight of – 5m. B1 for 6k + – 5m. Mark final answer. |