Find the equation of the line whose portion intercepted between the axes is
Find the equation of the line whose portion intercepted between the axes is bisected at the point (3, -2).
To Find: The equation of the line whose portion intercepted between the axes is bisected at the point (3, -2).
Formula used:
Let the equation of the line be
$\frac{x}{a}+\frac{y}{b}=1$
Since it is given that this equation, whose portion is intercepted between the axes is bisected i.e.; is divided into ratio $1: 1$.
Let $A(a, 0)$ and $B(0, b)$ be the points foring the coordinate axis.
$\Rightarrow a$ and $b$ are intercepts of $x$ and $y$-axis respectively.
By using mid-point formula $(\mathrm{m}: \mathrm{n}=1: 1)$
$(x, y)=\left(\frac{y_{1}+x_{1}}{2}, \frac{y_{2}+x_{2}}{2}\right)=\left(\frac{a}{2}, \frac{b}{2}\right)$
Since given point (3 , -2) divides coordinate axis in 1:1 ratio
(x , y) = (3 , -2)
$\Rightarrow \frac{a}{2}=3$ and $\frac{b}{2}=-2$
$a=6 b=-4$
equation of the line $: \frac{x}{a}+\frac{y}{b}=1$
$\frac{x}{6}+\frac{y}{-4}=1$
$-4 x+6 y=-24$
$-2 x+3 y=-12$
Hence the required equation of the line is $2 x-3 y=12$.