Foundation June 2019 Paper 1R Q10
10 Here is a number machine.
(a) Work out the output when the input is 8 (1)
(b) Work out the input when the output is 82 (2)
The input is \(y\).
(c) Find an expression, in terms of \(y\), for the output. (2)
| Scheme | Marks |
|---|---|
| 47 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| (82 + 9) ÷ 7 or 82 + 9 (= 91) | M1 |
| 13 | A1 |
| (2) |
Notes
M1: for + 9 or ÷ 7
| Scheme | Marks |
|---|---|
| \(7y - 9\) | B2 |
| (2) | |
| (5 marks) |
Notes
B2: oe e.g. \(y \times 7 - 9\)
(B1) for \(7y\) or \(y - 9\) or \(y = 7y - 9\)