#include <iostream>
#include <string>
#include <stdio.h>
using namespace std;
int main()
{
    int N;
	cin>>N;
	while(N--){
		bool ans;
		double x1,y1,x2,y2,x3,y3,x4,y4;
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		double a,b;
		if(x1==x2){
			x3==x4?ans=true:ans=false;
		}else if(x3==x4){
			ans=false;
		}else{
			a=(double)(y1-y2)/(x1-x2);
			b=(double)(y3-y4)/(x3-x4);
			a==b?ans=true:ans=false;
		}
		ans?puts("YES"):puts("NO");
	}
    return 0;
}