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4. Linear Equations in Two Variables
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एक ही कार्तीय तल में $y=x$ और $y=-x$ रैखिक समीकरणों के आलेख खींचिए। आप क्या देखते हैं ?
Option A
Option B
Option C
Option D
Solution

Any point on the graph of $y = x$ will have $x$ and $y$ coordinates same. The line passes through the points $(0,0),(1,1)$ and $(-1,-1). $
Again, any point on the graph of $y=-x$ will have $x$ and $y$ coordinates of opposite signs. The line passes through the points $(1,-1)$ and $(-1,1).$
Also, $(0,0)$ satisfy $y=-x.$
The graph of linear equation $y = x$ and $y =- x$ on the same Cartesian plane is shown in the figure given below.
We observe that the graph of these equation passes through $(0,0) .$
Standard 9
Mathematics
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