The quadcopter's average velocity is given in terms of change in position by
where , the difference in the quadcopter's final and initial positions and
.
The -component of the average velocity is 2.70 m/s, so
and the -component is -2.50 m/s, so
Its a reflection over an x-axis, whats "positive" goes "negative" and whats "negative" goes "positive" with respect to y.
If a shape is a subset (made of
of quadrants
then the part
that lies in the second quadrant gets mapped to
and part
that lies in third quadrant gets mapped to
Hope this helps.