y α √x+1,y=k√x+1 6 = k√3+1 6 = k√4 6 = 2k k = 62 = 3 y = √(x+1) 9 = 3√(x+1)(divide both side by 3) 93 = 3√x+13 3 = √x+1(square both sides) 9 = x + 1 x = 9 - 1 x = 8
