Question 35
Coordinate GeometryFind the locus of points 8 cm from T(0, 3).
- A.x2 + y2 − 6y = 55
- B.x2 + y2 − 6y = 64
- C.x2 + y2 − 6y = 73
- D.x2 + y2 = 64
Show the answer and explanation
Answer: A (x2 + y2 − 6y = 55)
Explanation
The locus is the circle x² + (y − 3)² = 64, i.e. x² + y² − 6y + 9 = 64, so x² + y² − 6y = 55.