Question

Which of the following number(s) lie in the fourth quadrant?

• A. $(1,-1)$
• B. $(-2,1)$
• C. $(4,-1)$
• D. $(-2,-2)$

Answer 1

Answer: (A), (C)

$(4,-1)$

• First Quadrant: Both the $x$ and $y$ -coordinates are positive.
• Second Quadrant: $x$-coordinate is negative and $y$-coordinate is positive.
• Third Quadrant: Both the $x$ and $y$-coordinates are negative.
• Fourth Quadrant: $x$-coordinate is positive and $y$-coordinate is negative.

$(1,-1)\to \text{Fourth Quadrant}$
$(-2,1)\to \text{Second Quadrant}$
$(4,-1)\to \text{Fourth Quadrant}$
$(-2,-2)\to \text{Third Quadrant}$

Therefore, option (a.) and option (c.) are the correct choices