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[JEE Advanced 1979] The equations $x+2y+2z=1$ and $2x+4y+4z=9$ have

VAVidaara Admin Asked 1mo ago 1 views 1 answer
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The equations $x+2y+2z=1$ and $2x+4y+4z=9$ have

(a) only one solution
(b) only two solutions
(c) infinitely many solutions
(d) none of these

1 Answer

VAVidaara Admin ✓ Vidaara Team ✓ Accepted · 1mo ago ▲ 0

Correct answer: (d) none of these

The second equation is twice the left side of the first but $2\ne9$, so the system is inconsistent — no solution.

JEE Advanced 1979 · Quadratic Equations and Inequations — verified solution by the Vidaara Team.

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