June 2025 Paper 2 Q1
1 The equation of a circle is \((x-4)^2 + (y+5)^2 - 64 = 0\).
(a) State the coordinates of the centre of the circle. [1]
(b) State the radius of the circle. [1]
| Scheme | Marks | AO |
|---|---|---|
| [centre is] \((4,\ -5)\) | B1 | 1.1 |
| [1] |
Notes
B1: allow \(x = 4,\ y = -5\); condone omission of brackets
| Scheme | Marks | AO |
|---|---|---|
| [radius is] 8 | B1 | 1.1 |
| [1] |