Maths_Week 1_Activity no. 9

[Owais Shaikh]

Suppose f:Z→Z is a function defined by f(x)=Ax+B. For which of the following integer values of A and B, is the given function bijective?

a) A=0,B={z|z∈Z}

b) A={−1,1},B={z|z∈Z}

c) B={−1,1},A=0

d) B=0,A={z|z∈Z}