Find the equation of tangent to the curve y = (x-1)2 which is parallel to the chord joining (1, 0) and (3, 4)
2x + y + 3 = 0
x - y = 1
2x - y - 3 = 0
x + y = 3
The equation of the diameter of the circle x2+y2+2x−4y−11=0 which bisects the chords intercepted on the line 2x−y+3=0 is