Question

In 2D-translation, a point (x, y) can  move to the new position (x’, y’) by using the equation

(a) x’=x+dx and y’=y+dx

(b) x’=x+dx and y’=y+dy

(c) X’=x+dy and Y’=y+dx

(d) X’=x-dx and y’=y-dy

This question was posed to me during an internship interview.

Asked question is from 2D Translation topic in section 2D Transformation and Viewing of Computer Graphics

Answer 1

Right answer is (b) x’=x+dx and y’=y+dy

For explanation I would say: By adding translation distance dx and dy to its originsl position (x, y) we can obtain a new position (x’, y’).