Answer:
Hence, the relation R is a reflexive, symmetric and transitive relation.
Given :
A be the set of all lines in the plane and R is a relation on set A.

To find :
Which type of relation R on set A.
Explanation :
A relation R on a set A is called reflexive relation if every  then
 then  .
.
So, the relation R is a reflexive relation because a line always parallels to itself.
A relation R on a set A is called Symmetric relation if  then
 then  for all
 for all  .
.
So, the relation R is a symmetric relation because if a line  is parallel to the line
 is parallel to the line  the always the line
 the always the line  is parallel to the line
 is parallel to the line  .
.
A relation R on a set A is called transitive relation if  and
 and  then
 then  for all
 for all  .
.
So, the relation R is a transitive relation because if a line  s parallel to the line
 s parallel to the line  and the line
 and the line  is parallel to the line
 is parallel to the line  then the always line
 then the always line  is parallel to the line
 is parallel to the line  .
.
Therefore the relation R is a reflexive, symmetric and transitive relation.
 
        
             
        
        
        
I believe this is how you solve it
 
        
        
        
Answer:
B. I think
Step-by-step explanation:
 
        
                    
             
        
        
        
Answer:
Step-by-step explanation:
It seems you got the right answer, but didn’t do the problem correctly. 
 The square root of 2 times the square root of 2 is 2. And then 6 times the square root of two minus the product of 6 and the square root of two equals zero. And then obviously 6 and -6 equals -36. So 2+-36 is -34