Question

If solutions of a linear equation are (-10, -10), (0, 0) and (10, 10), find the equation.

Answer 1

slope of the line m= (y₂-y₁)/(x₂-x₁)
                            m= (10-0)/(10-0)
                            m=1

Now, y-y₁=m(x-x₁)
          y-0=1(x-0)
          x-y=0 which is the equation of line.

Hope it helped.