Answer:
Soccer practice started at 6:00, because 7:15 - 1:15 = 6:00
 
        
             
        
        
        
Answer:
Step-by-step explanation:
Ive already explained this somebody else asked if you find it you will have the answer
 
        
             
        
        
        
<h3>
Answer: Choice C</h3><h3>
{ (-2,2), (0,2), (7,2), (11,2) }</h3>
Here we don't have any repeated x values. 
In choice A, x = 2 repeats. In other words, x = 2 leads to multiple y outputs. So this is not a function. Choices B and D are similar stories. A function is only possible if every x leads to exactly one y value only. The graph must pass the vertical line test.
Side note: the y values can repeat, but the function won't be one-to-one.