False because they don't have the same length and shape you know they may be triangle but the their length are different.
        
             
        
        
        
The answer is X=3 or x=5/3
        
             
        
        
        
Answer:
The area of the triangle is 18 square units. 
Step-by-step explanation:
First, we determine the lengths of segments AB, BC and AC by Pythagorean Theorem:
AB
![AB = \sqrt{(5-2)^{2}+[6-(-1)]^{2}}](https://tex.z-dn.net/?f=AB%20%3D%20%5Csqrt%7B%285-2%29%5E%7B2%7D%2B%5B6-%28-1%29%5D%5E%7B2%7D%7D)

BC


AC 
![AC = \sqrt{(-1-2)^{2}+[4-(-1)]^{2}}](https://tex.z-dn.net/?f=AC%20%3D%20%5Csqrt%7B%28-1-2%29%5E%7B2%7D%2B%5B4-%28-1%29%5D%5E%7B2%7D%7D)

Now we determine the area of the triangle by Heron's formula:
 (1)
 (1)
 (2)
 (2)
Where:
 - Area of the triangle.
 - Area of the triangle.
 - Semiparameter.
 - Semiparameter.
If we know that  ,
,  and
 and  , then the area of the triangle is:
, then the area of the triangle is:


The area of the triangle is 18 square units. 
 
        
             
        
        
        
It would be for example:  f-25
        
             
        
        
        
Answer:
the only one that is a function is B 
Step-by-step explanation:
the rest of them have repeating inputs which makes them no functions