Study the given graph carefully. Complete the table and find the value of $P+Q-R-S$.
"
To do: To complete the given table and to find the value of $P+Q-R-S$.
Solution:
In the given graph we get:
When $X=3\Rightarrow Y=4\Rightarrow P=4$
When $Y=3\Rightarrow X=4\Rightarrow Q=4$
When $X=2\Rightarrow Y=2\Rightarrow R=2$
When $Y=1\Rightarrow X=5\Rightarrow S=5$
The complete table is as below:
| $X$ | $3$ | $Q=4$ | $2$ | $S=5$ |
| $Y$ | $P=4$ | $3$ | $R=2$ | $1$ |
And now, $P+Q-R-S=4+4-2-5=8-7=1$.
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