#include <stdio.h>
int main()
{
  int n;
  float x1,y1,x2,y2,x3,y3,x4,y4,k1,k2;
  scanf("%d",&n);
  while(n>0){
    scanf("%f%f%f%f%f%f%f%f",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
    if(x1==x2 && x3==x4) printf("YES\n");
    else if(x1==x2 || x3==x4) printf("NO\n");
    else {
      k1 = (y2-y1)/(x2-x1);
      k2 = (y4-y3)/(x4-x3);
      k1 = (int)(k1*1000)/1000.0;
      k2 = (int)(k2*1000)/1000.0;
      if(k1==k2) printf("YES\n");
      else printf("NO\n");
    }
    n--;
  }
  return 0;
}