Answer:
resultant r is shown in the attached
Explanation:
The resultant of the sum of vectors has components that are the sum of the components of the contributing vectors.
a = (-1, -3)
b = (2, -1)
r = a +b = (-1, -3) +(2, -1)
r = (-1 +2, -3 -1) = (1, -4)
The resultant vector can be drawn from the origin to the point (1, -4), as it is in the attachment.