1MA0 Foundation November 2012 Paper 2 Q18
18 \(y = 4x + c\)
\(x = 7.5\)
\(c = 5.4\)
(a) Work out the value of \(y\). (2)
\(y = 4x + c\)
\(y = 18.8\)
\(c = -2.4\)
(b) Work out the value of \(x\). (2)
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(y = 4 \times 7.5 + 5.4\) | 35.4 | 2 | M1 for \(4 \times 7.5 + 5.4\) A1 cao |
| Working | Answer | Mark | Notes |
|---|---|---|---|
| \(18.8 = 4x - 2.4\) \(x = \dfrac{18.8 + 2.4}{4}\) | 5.3 | 2 | M1 for intention to add 2.4 to 18.8 or to subtract \(-2.4\) from 18.8 or to divide 18.8 and \((-)2.4\) by 4 A1 cao |