PDF chapter test TRY NOW
1. Check whether \((5,-1)\) is a solution of the simultaneous equations \(x - 2y = 7\) and \(2x + 3y = 7\).
Proof:
\(x - 2y = 7\) ---- (\(1\))
\(2x + 3y = 7\) ---- (\(2\))
Substitute \(x =\) and \(y =\) in equations (\(1\)) and (\(2\)).
From (\(1\)), LHS RHS.
From (\(2\)), LHS RHS.
Since LHS RHS in both the equations, then \((5,-1)\) is .
2. Solve the system of linear equations \(x + 3y = 16\) and \(2x - y = 4\) by substitution method.
Answer:
\(x =\)
\(y =\)
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