Mathematics for IGCSE & O level - Transformations (Section 4 - No. 24)
A point at (1, 4) is reflected across the line x = 3. What are the coordinates of the image?
(5, 4)
(1, -4)
(4, 3)
(3, 1)
คำอธิบาย
Reflection across x = 3: x' = 3 + (3-1) = 5, y remains 4.