For what value of c is the function one-to one? {(1,,3)(3,,,11)(6,c)}

 any positive integer   that is ^{\mathbb{Z}^+} > 11 can be the value of c

Explanation:

c can not take any value less than 11 or even 11 because if we look at the graph of these points they will give the increasing line curve.

if c has value less than 11  the curve gets discontinuous by the below definition

one-one function is the function in which every element of range that is Y corresponds unique element of domain that is X. and if it passes the vertical and horizontal line test then it the function is one-one.

so if c takes value less than 11 the vertical line test fails and contradiction arises for one-one function.

Hence, c takes positive integer greater than 11.

step-by-step explanation: