n = input()+1
for v in range(1,n):
        (x1,y1,x2,y2,x3,y3,x4,y4)=map(int,raw_input().split())
        if x2-x1==0 or x4-x3==0:
                if x2-x1==0 and x4-x3==0:
                        print "YES"
                else:
                        print "NO"
        elif y2-y1==0 or y4-y3==0:
                if y2-y1==0 and y4-y3==0:
                        print "YES"
                else:
                        print "NO"
        else:
                a = (y2-y1)/(x2-x1)
                b = (y4-y3)/(x4-x3)
                if a == b:
                        print "YES"
                else:
                        print "NO"