Domain: {-1}
Range: {0, 4, 9, 15}
Function? No
Explanation:
The domain is the x value in the given points. The only x value is -1. 
The range is the y value in the given points.
You can tell if this is a function if it has repeating x values or not. Since the x value of -1 repeats, it is not a function.
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Answer:
2 15.50 50
Step-by-step explanation:
took the test
 
        
                    
             
        
        
        
Answer:
1/2 and 9 is rational but 4 is not
Step-by-step explanation:
A rational number is a number that can be written as a ratio. That means it can be written as a fraction, in which both the numerator (the number on top) and the denominator (the number on the bottom) are whole numbers. 
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