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Pair of Linear Equations in Two Variables - Important Questions
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1
Core Concept
4 Marks
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Solve: 2x + y = 6 and 4x − 2y = 4. State the nature of solution.
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a
1
/a
2
= 2/4 = 1/2, b
1
/b
2
= 1/(−2) = −1/2 ⇒ Unique Solution.
Multiply eq 1 by 2: 4x + 2y = 12
Add: 8x = 16 ⇒
x = 2
,
y = 2