Higher June 2024 Paper 1 Q8
8 Solve \(\quad 7x - 22 = 4x + 29\) [3 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(7x - 4x\) or \(3x\) or \(4x - 7x\) or \(-3x\) or \(-22 - 29\) or \(-51\) or \(22 + 29\) or 51 | M1 | |
| \(3x = 51\) or \(-3x = -51\) | A1 | \(\dfrac{51}{3}\) or \(\dfrac{-51}{-3}\) implies M1A1 implied by correct answer |
| 17 | A1ft | ft M1A0 from an equation of the form \(\pm 3x = a\) or \(bx = \pm 51\) |
Additional guidance
| Trial and improvement scores 0 or 3 | |
| If a follow through answer does not simplify to an integer, accept it as a fraction, mixed number or decimal to at least 1dp. eg from \(3x = 7\) accept \(\dfrac{7}{3}\) or \(2\dfrac{1}{3}\) or 2.3 or better Ignore any attempt to convert a correct ft fraction | M1A0A1ft |
| Embedded answer | M1A1A0 |