Intermediate November 2020 Unit 1 Q2
2.
(a) Draw the line \(x = -4\) on the grid below. [1]
(b) C is a point on the grid below so that:
- \(B\hat{A}C\) = 90°,
- AC = AB.
(i) Show the position of point C on the grid. [2]
(ii) Write down the coordinates of point C. [1]
| Scheme | Marks | Comments |
|---|---|---|
| Line \(x = -4\) drawn | B1 | Line must be at least 2 units long. B0 if ‘extra’ lines drawn unless correct line unambiguously identified. |
| Scheme | Marks | Comments |
|---|---|---|
| (i) Point C shown at (−2,−4) | B2 | Allow B2 if point C not labelled but is unambiguously at the correct position (eg ‘end of line’) Otherwise, B1 if Point C at (−2,\(y\)) \(y \neq 3\). (\(B\hat{A}C\) = 90° ) SC1 for point C at (5,−4). |
| (ii) (−2,−4) | B1 | FT ‘their unambiguously identified position of point C’. Allow missing brackets. |