A) \[(-4,-2)\]
B) \[(4,3)\]
C) \[(2,4)\]
D) \[(4,2)\]
Correct Answer: D
Solution :
Put \[x=2y\] in eq. (2), we get |
\[3(2y)+4y=20\,\,\,\,\,\,\,\,\Rightarrow \,\,\,\,\,\,10y=20\] |
\[\Rightarrow \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,y=2\] |
\[\therefore \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,x=2\times 2=4\] |
Hence, intersection point of two lines is\[(4,2)\] |
So, option [d] is correct. |
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