4MA0 Higher January 2016 Paper 4 Q11
11 Solve the simultaneous equations
\[\begin{aligned} 5x + y &= 17 \\ x + y &= 3 \end{aligned}\]Show clear algebraic working.
(3)
| Scheme | Marks |
|---|---|
| Eg. \(4x = 14\) or \(4y = -2\) or \(-4y = 2\) or \(5(3 - y) + y = 17\) or \(5x + 3 - x = 17\) or \(x + 17 - 5x = 3\) | M1 |
| \(x = 3.5\), \(y = -0.5\) | A1oe A1oe |
| (3) |
Notes
M1: for correctly eliminating 1 variable
A1oe A1oe: dep on M1