Question

If the point (x,y) is in quadrant I, which of the following must be true?

A. x < 0 and y < 0
B. x < 0 and y > 0
C. x > 0 and y < 0
D. x > 0 and y > 0

Answer 1

In quadrant I of the Cartesian coordinate system, both the x-coordinate and the y-coordinate are positive. Therefore, the point (x, y) in quadrant I must satisfy:

D. x > 0 and y > 0

This is the correct answer.