The equation of a line passing through point m (3, - 4) with equal intercept on two coordinate axes

The equation of a line passing through point m (3, - 4) with equal intercept on two coordinate axes

If you cross the origin, the intercept is 0, which is in accordance with
Then 4x + 3Y = 0
If not the origin
Let the intercept be a
Then x / A + Y / a = 1
So a = x + y = 3-4 = - 1
So 4x + 3Y = 0 and X + y + 1 = 0