Foundation November 2020 Paper 2 Q30
30 Work out the gradient of the straight line through \((-2, 3)\) and \((1, 9)\) [2 marks]
| Answer | Mark | Comments |
|---|---|---|
| \(\dfrac{9 - 3}{1 - -2}\) or \(\dfrac{6}{3}\) or \(2x\ (+\,c)\) where \(c\) is a constant | M1 | oe eg \(\dfrac{3 - 9}{-2 - 1}\) or \(\dfrac{-6}{-3}\) |
| 2 | A1 |
Additional guidance
| \(2x\) may be implied eg \(y - 3 = 2(x + 2)\) | M1A0 |