Intermediate November 2022 Unit 1 Q6
6.
(a) Solve the equation \(7p - 3 = 60\). [2]
(b) Simplify the expression \(6a - 7b - 2a - 8b\). [2]
| Scheme | Marks | Comments |
|---|---|---|
| \(7p = 63\) | B1 | FT from \(7p = k\). |
| \(p = 9\) | B1 | Unsupported answer of 9 is awarded B1B1. \(p\) = 63/7 is awarded B1B0. If FT leads to a whole number answer, it must be shown as a whole number. Otherwise accept a fraction (e.g if \(7p = 60\), then \(p\) = 60/7 is awarded B0B1, but \(p\) = 60÷7 is awarded B0B0). Allow B1B1 for a correct embedded answer BUT only B1B0 if contradicted by \(p \ne 9\). Mark final answer. |
| Scheme | Marks | Comments |
|---|---|---|
| \(4a - 15b\) | B2 | Must be an expression for B2. Award B1 for one of the following:
|