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प्रश्न
Solve graphically
x – y = 0, y + 3 = 0
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उत्तर
x – y = 0
– y = – x
y = x
| x | – 2 | 0 | 1 | 3 |
| y | – 2 | 0 | 1 | 3 |
Plot the points (– 2, – 2), (0, 0), (1, 1) and (3, 3) in the same graph sheet.
y + 3 = 0
y = – 3
| x | – 2 | 0 | 1 | 2 |
| y | – 3 | – 3 | – 3 | – 3 |
Plot the points (– 2, – 3), (0, – 3), (1, – 3) and (2, – 3) in the same graph sheet.
The two lines l1 and l2 intersect at (– 3, – 3). The solution set is (– 3, – 3).
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