Foundation November 2023 Paper 3 Q28
28 The line L is shown on the grid.
Find an equation for L. (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(y = -2x + 3\) | M1 | for a correct method to find the gradient of the line, eg \(\dfrac{-1 - 3}{2 - 0}\ (= -2)\) or uses 3 as the intercept in \(y = mx + c\), eg \(y = mx + 3\) oe, \(y = 1.5x + 3\) |
| M1 | for \(y = [-2]x + c\) or for (L =) \(3 - 2x\) or uses their gradient and a point on the line, eg \(y - {-1} = [-2](x - 2)\) | |
| A1 | for \(y = -2x + 3\) oe |
Additional guidance
[−2] must be identifiable as their gradient
Any correct equation gets 3 marks