4MA0 Foundation June 2015 Paper 1 Q6
6 Here is a number machine.
(a) Find the output when the input is 3 (1)
(b) Find the output when the input is −7 (1)
(c) Find the input when the output is 140 (1)
The input is \(x\)
The output is \(y\).
(d) Write down a formula for \(y\) in terms of \(x\). (2)
| Scheme | Marks |
|---|---|
| 35 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| −15 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| 24 | B1 |
| (1) |
| Scheme | Marks |
|---|---|
| M1 | |
| \(y = 5x + 20\) | A1 |
| (2) | |
| Total 5 marks |
Notes
M1: for \(5x + 20\) oe
A1: oe