Higher November 2021 Paper 5 Q19
19 The point \((5, 7\sqrt{2})\) lies on the circumference of a circle, centre (0, 0).
Find the equation of the circle. [4]
| Answer | Marks | Part marks and guidance | |
|---|---|---|---|
| \(x^2 + y^2 = 123\) final answer | 4 | B2 for 123 or B1 for 98 or M1 for \(5^2 + (7\sqrt{2})^2\) oe | |
| B1 for \(x^2 + y^2 = k\) as final answer | Accept ‘= \(k\)’ or numeric value where \(k > 0\) | ||