Here, we will discuss about the double intercept form of the equation of straight lines.
Let a straight line intersect x-axis and y-axis at

Then,
This is the equation of the line whose intercepts are
Obtain the equation of the straight line passing through the point cutting off equal intercepts on the axes.
Here,
Since this line passes through the point
Putting the value of
Find the equation of the straight line which passes through the point and makes intercepts on the axes, the sum of whose lengths is .
The equation of the line is,
Solving
Taking
Taking
Determine the equation of the line the portion of which, intercepted by the axes, is divided by the point in the ratio .

Let the line intersect x-axis and y-axis at
Thus, equation of line is,
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