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4. Linear Equations in Two Variables
medium
Draw the graph and linear equations in two variables : $x - y = 2$
Option A
Option B
Option C
Option D
Solution
$x-y =2$ $ \Rightarrow y=x-2$
If we have $x=0,$ then $y=0-2=-2$
$x=1,$ then $y=1-2=-1$
$x=2,$ then $y=2-2=0$
$\therefore$ We get the following table :
| $x$ | $0$ | $1$ | $2$ |
| $y$ | $-2$ | $-1$ |
$0$ |
Plot the ordered pairs $(0,\,-2)$, $(1,\,-1)$ and $(2,\,0)$ on the graph paper. Joining these poltils, we get a line $PQ$ as shown below.
Thils the line $PQ$ is the required graph of $x-y=2$.
Standard 9
Mathematics
