Answer :
Y-2=3(x+1). y-y₁=m(x-x₁) Is your original formula and since you got the formula you only have to replace your (x, y) values by x₁ and y₁
Y-2=3(x+1). y-y₁=m(x-x₁) Is your original formula and since you got the formula you only have to replace your (x, y) values by x₁ and y₁