Question

Find equation of line passing through (1,-2) and cuts off equal intercepts on axes

Answer 1

$equatin \: of \: the \: line \: is \\ \frac{x}{a } + \frac{y}{a} = 1 \\ x + y = a$
since it passes through (1,-2)

$1 - 2 = a \\ - 1 = a$
therefore
$x + y + 1 = 0$