Find the equations to the sides of an isosceles right-angled triangle, the equation of whose hypotenuse is 3x + 4y = 4, and the opposite vertex is the point (2,2).

a) x - y + 2 = 0, x + y - 4 = 0
b) x - y - 2 = 0, x + y - 4 = 0
c) x - y + 4 = 0, x + y - 2 = 0
d) x - y - 4 = 0, x + y + 2 = 0