Higher June 2017 Paper 3 Q2
2 Solve the simultaneous equations
\[\begin{aligned} 3x + y &= -4 \\ 3x - 4y &= 6 \end{aligned}\](3)
| Answer | Mark | Notes |
|---|---|---|
| \(x = -\dfrac{2}{3}\) \(y = -2\) | M1 | for a method to eliminate one variable (condone one arithmetic error) |
| M1 | (dep) for substituting found value in one of the equations or appropriate method after starting again (condone one arithmetic error) | |
| A1 | \(x = -\dfrac{2}{3}\) oe and \(y = -2\) |