EXPLANATION
Given the function, we can state the domain as follows:
Domain: (-6,∞)
Now, the range will be as follows:
Range: {-2, 0, 2, 4}
A one to one function would be: {(-5,-2), (-4,-2), (-3,-2), (-2,0), (-1,0), (0,0), (1,0), (2,2), (3,2), (4,2), (5,4), (6,4)} --> The function passes the vertical line test. Additionaly, It's not a one to one because there are more than one value of y corresponding to different values of x.
