Higher November 2019 Paper 5 Q18
18 The graph of \(3y + 6x = 13\) is drawn on the grid.
The region R satisfies these inequalities.
\(3y + 6x \geqslant 13\) \(y \leqslant x - 2\) \(x \gt 3\)
By drawing two more straight lines, find and label the region R. [6]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
 | 6 | B1 for \(y = x - 2\) drawn B2 for \(x = 3\) broken line or B1 \(x = 3\) solid line AND B1 for R correct side of \(3y + 6x = 13\) B1 for R correct side of their \(y = x - 2\) B1 for R correct side of \(x = 3\) | Penalise one mark only for good freehand lines Additional lines treat as choice See marks on diagram for the final B3 marks provided all lines drawn correctly For region, FT their \(y = x - 2\) provided line with positive gradient only but no FT for \(x = 3\) if incorrect |