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9.Straight Line
easy

$2x - 3y = 4$ ને સમાંતર રેખા કે જે અક્ષો સાથે $12$ ચોરસ એકમ ક્ષેત્રફળનું ત્રિકોણ બનાવે તે રેખાનું સમીકરણ

A

$3x + 2y = 12$

B

$2x - 3y = 12$

C

$2x - 3y = 6$

D

$3x + 2y = 6$

Solution

Let, eq of required line is $2 x-3 y=d$

Where $d$ is an arbitrary constant

$\therefore x-$ intercept $=d / 2$

$y$-intercept $-d / 3$

$\therefore$ Area of $\Delta=\frac{1}{2} \times \frac{ d }{2} \times \frac{ d }{3}=12 sq$. units

$\Rightarrow d =\pm 12$

$\therefore$ Required line is $2 x -3 y =12$

Standard 11
Mathematics

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