1MA0 Higher June 2015 Paper 1 Q18
18 On the grid show, by shading, the region that satisfies all three of the inequalities
\(x + y \lt 7\) \(y \lt 2x\) \(y \gt 3\)
Label the region R.
(4)
| Answer | Mark | Notes |
|---|---|---|
| Region identified | 4 | M1 for the graph of \(x + y = 7\) or \(y = 2x\) drawn M1 for the graphs of \(x + y = 7\), \(y = 2x\) and \(y = 3\) drawn M1 for any correct shading (in or out), satisfying at least two correct inequalities where the shading must extend from the appropriate lines. A1 for correct region identified by either shading in, or shading out; the letter R is not required. Accept without shading only with the correct region indicated by R. NB accept lines that are solid or dotted/dashed etc or lines defined by unambiguous shading |