Question

if the point $(x, y)$ is in quadrant iii, which of the following must be true?
$x > 0$ and $y > 0$
$x < 0$ and $y < 0$
$x > 0$ and $y < 0$
$x < 0$ and $y > 0$

Explanation:

In the Cartesian coordinate system, Quadrant III is defined as the region where both the x-coordinate and y-coordinate of a point are negative values.

Answer:

x < 0 and y < 0