10th Class Mathematics Pair of Linear Equations in Two Variables Question Bank MCQs - Pair of Linear Equations in Two Variables

\[x=2,\] \[y=1\]is a solution of the linear equation:

A) \[2x+7y=11\]

B) \[4x-2y=5\]

C) \[x-3y=5\]

D) \[3x-4y=8\]

Correct Answer: A

Solution :

[a] Putting \[x=2,\] \[y=1\]in given equations, we-have

[a] \[LHS=2(2)+7(1)=11=RHS\]

[b] \[LHS=4(2)-2(1)=6\ne RHS\]

[c] \[LHS=2-3(1)=-1\ne RHS\]

[d] \[LHS=3(2)-4(1)=2\ne RHS\]

Hence, \[x=2,\]\[y=1\] is a solution of the linear equation given in option [a].