1MA0 Higher March 2013 Paper 1 Q7
7
(a) Simplify \(5x + 4y + x - 7y\) (2)
(b) Solve \(7(x + 2) = 7\) (2)
| Answer | Mark | Notes |
|---|---|---|
| \(6x - 3y\) | 2 | M1 for an attempt to combine terms in \(x\) or terms in \(y\) correctly eg \(5x + x\) (\(= 6x\)), \(4y - 7y\) (\(= -3y\)) A1 for \(6x - 3y\) oe |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(7x + 14 = 7\) or \(x + 2 = 1\) \(7x = -7\) | \(x = -1\) | 2 | M1 for correctly expanding the bracket or an attempt to divide both sides by 7 e.g. \(7x + 14\) or \(x + 2 = 7 \div 7\) oe A1 cao |