Foundation November 2024 Paper 3 Q27
27 Line L is drawn on the grid.
Find an equation for line 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 identifies 3 as the intercept in words or in a partial linear equation eg \(y = mx + 3\) oe eg \(y = 1.5x + 3\) or for \(y = [-2]x + c\) or for \(y - b = [-2](x - a)\) where \((a, b)\) is a correct coordinate |
| M1 | for \(y = -2x\ (+\, c)\) or for \(y = \text{``}{-}2\text{''}x + 3\), \(m \neq 0\) or for (L =) \(-2x + 3\) or \(y - y_1 = -2(x - x_1)\) or for \(y - b = \text{``}{-}2\text{''}(x - a)\) where \((a, b)\) is a correct coordinate | |
| A1 | for \(y = -2x + 3\) oe |
Additional guidance
Just circling 3 is insufficient
[−2] can be any numerical value, \(c\) must be seen as a letter or a number
[−2] can be any numerical value
Award of this mark implies the first M1
Any correct equation gets 3 marks