4MA0 Foundation June 2013 Paper 1R Q24
24 Solve the simultaneous equations
\[\begin{aligned} 3x - y &= 6 \\ x + y &= 12 \end{aligned}\]Show clear algebraic working.
(3)
| Scheme | Marks |
|---|---|
| \(4x = 18\) or \(4y = 30\) | M1 |
| \(x = 4.5,\ y = 7.5\) | A1 A1 |
| (3) |
Notes
M1: correctly eliminate 1 variable