Question

For x = 1, y = 3, u = -5, v = 6 the point (x+y, u+v) lies in the quadrant .

Answer 1

Abscissa is x + y = 1 + 3 = 4

Ordinate is u + v = -5 + 6 = 1

The point is (4,1).

Since both coordinates of the point are positive
$\therefore$ The point lies in quadrant I.