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3. Coordinate Geometry
easy
If $P (-1,1), Q(3,-4), R (1,-1), S (-2,-3)$ and $T (-4,4)$ are plotted on the graph paper, then the points in the fourth quadrant are
A
$P$ and $T$
B
$O$ and $S$
C
$Q$ and $R$
D
$P$ and $R$
Solution
We know that quadrant $IV$ consists of the all points $( x , y )$ for which $x$ is positive and $y$ negative.
So, the points in the fourth quadrants are $Q(3,-4)$ and $R(1,-1).$
Standard 9
Mathematics