Use the diagram showing points P and Q. P(-2, 1) Q(2, 1) 
Determine which point is the remaining vertex of a triangle with an area of 4 square units. 
R(2, 0) 
S(-2,-1) 
T(-1, 0) 
U(2,-2) 
please help !! include explanation
                                             
                                          
                                          
                                        
											