Foundation June 2024 Paper 3 Q19
19 On the grid below, draw the graph of \(\ y = 3x - 2\ \) for values of \(x\) from \(-2\) to 3 (3)
| Answer | Mark | Mark scheme |
|---|---|---|
| \(y = 3x - 2\) drawn | B3 | for a correct line between \(x = -2\) and \(x = 3\) |
| (B2 | for a correct straight line segment through at least 3 of \((-2, -8), (-1, -5), (0, -2), (1, 1), (2, 4), (3, 7)\) or for all of these points plotted but not joined OR for a line drawn with positive gradient through \((0, -2)\) and clear intention to use a gradient of 3, eg line through \((0, -2)\) going across 2 squares and up 6 squares) | |
| (B1 | at least 2 correct points stated or plotted OR for a line drawn with positive gradient through \((0, -2)\) OR a line with gradient of 3) |
Additional guidance
| \(x\) | \(-2\) | \(-1\) | 0 | 1 | 2 | 3 |
| \(y\) | \(-8\) | \(-5\) | \(-2\) | 1 | 4 | 7 |
Ignore any incorrect points. Points need not be plotted for a correct line (segment) drawn
Ignore any incorrect points
Coordinates may be in a table or in working