Write the equations of the tangents to the curve  at the points of its intersection with the hyperbola

a) y = 1, x + 2y = 2

b) y + 1 = 0, 2x + y = 1

c) y + 1 = 0, 2x – y + 2 = 0

d) y = 1, x + 2y + 1 = 0