Find the equation of the line passing through the two points (1,-1) and (3,5).

Explanation

Here `x_1=1, y_1=-1, x_2=3` and `y_2=5 .`
Using two-point form, equation of the line, is

`y-(-1)=5-(-1)/3-1(x-1)`

or `-3 x+y+4=0`, which is the required equation