Solve the following graphically : a] 3x + y = 11 and x - y - 1 = 0
b] 4x - 3y + 4 = 0 and 4x + 3y -20 = 0
c] x - y = 1 and 2x + y = 8
b] 4x - 3y + 4 = 0 and 4x + 3y -20 = 0
c] x - y = 1 and 2x + y = 8
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