Foundation November 2019 Unit 1 Q13
13.
(a) Calculate the value of \(3x + 4y\) when \(x = -6\) and \(y = 5\). [2]
(b) Simplify the expression \(9g - 4f - 3g - 5f\). [2]
(c) Expand \(4(3x - 5)\). [1]
| Scheme | Marks | Comments |
|---|---|---|
| 2 | B2 | B1 for sight of – 18 (not – 18x) OR B1 for sight of (+)20 (not 20y and not −20). Mark final answer. |
| Scheme | Marks | Comments |
|---|---|---|
| 6g – 9f | B2 | Must be an expression for B2. B1 for sight of (+)6g OR sight of – 9f. B1 for 6g + – 9f. Mark final answer. |
| Scheme | Marks | Comments |
|---|---|---|
| 12x −20 | B1 | Must be shown as an expression. C.A.O. Mark final answer. |