Mathematics for IGCSE & O level - Vectors (Section 2 - No. 35)
If a shape is translated by the vector [4, -1], the shape moves:
4 units left and 1 unit up
4 units right and 1 unit down
4 units right and 1 unit up
4 units left and 1 unit down
解释
Positive x is right, negative y is down.