Question

Which of the functions does not have an inverse (is not one-to-one)?

A)f(x) = 7x-5
B) {(3,2), (4,0), (-3,2), (-4,-2)}
C){(0,-1), (4,0), (-8,4)}
D)f(x) = √x+1

Answer 1

B

Explanation:

2 repeats itsself twice for Y