4400 Higher June 2010 Paper 4 Q1
1 Solve \(6y - 9 = 3y + 7\)
(3)
| Scheme | Marks |
|---|---|
| \(6y - 3y = 7 + 9\) | M1 |
| \(3y = 16\) | M1 |
| \(5\frac{1}{3}\) oe or 5.33(...) | A1 |
| (3) | |
| (3 marks) |
Notes
M1: or better; correctly collect \(y\)’s & constants
A1: 2dp at least for decimal ans if 16/3 not seen
(A1 dep on at least 1 M1)