Given points are

Next, find the slope.

Substitute 8 for y₂,  1 for y₁, 3 for x₂, and 6 for x₁  in slope formula.

           (Subtract: )

                 (Subtract: )

                 (Cancel common signs)

                       (Cancel common terms)

You know the slope and a point on the line, so use point - slope form

with either given point to write an equation of line.

Choose

        (Substitute 1 for y₁, 6 for x₁ and )       

     (Apply distributive property: )

              (Multiply: )

  (Add 1 to each side)

        (Apply additive inverse property: )

              (Apply additive identity property: )

                           (Add: )

The equation of line is .