Answer:
It would be undefined if the line is vertical. 
Step-by-step explanation:
 
        
             
        
        
        
Let's not look at the option and try to solve it.
√x=7
Let's look at this. Square roots are the number that is multiplied by itself to make that number. For example, 2 is the square root of 4, 3 is the square root of 9.
We need to multiply 7 by itself to find x.
7×7=49
So, D. =49.
        
                    
             
        
        
        
Answer:
is this a question
Step-by-step explanation:
 
        
                    
             
        
        
        
2x² - 15x + 7
(2x - 1)(2x-14)
(2x - 1)(x - 7) x= 1/2 or 7
        
             
        
        
        
I’ve provided both the answer and explanation below! Hope this helps :)