#include<cstdio>
using namespace std;
int main()
{
    double x1,x2,x3,x4,y1,y2,y3,y4;
    int i,j;
    scanf("%d",&j);
    for(i=0;i<j;i++)
    {
        scanf("%lf%lf%lf%lf%lf%lf%lf%lf",&x1,&y1,&x2,&y2,&x3,&y3,&x4,&y4);
        if((y2-y1)/(x2-x1)==(y4-y3)/(x4-x3))
            printf("YES\n");
        else printf("NO\n");
    }
    return 0;
}