Higher June 2019 Paper 6 Q16
16 Sketch the graph of \(y = -\sin x\) for \(0^\circ \leqslant x \leqslant 360^\circ\).
[3]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
Correct sketch of \(y = -\sin x\) | 3 | There must be at least one cycle to gain any marks. B1 for a positive or negative sine curve shape starting at (0, 0) and B1 for maximums at (…, 1) and minimum at (…, –1) and B1 for maximum only at (270, …) and minimum only at (90, …) | e.g. B1B1B0 for \(y = \sin x\) drawn B0B1B0 for \(y = \pm\cos x\) drawn B1B1B0 for \(y = \sin 2x\) drawn Before using overlay, check the x-axis line All maximums and minimums within the horizontal zones on overlay Maximum and minimum within the vertical zones on overlay |