#include <iostream>
#include <float.h>
using namespace std;

int main()
{
	int n;
	cin>>n;
	for(int i=0;i<n;i++){
		double x1,y1,x2,y2,x3,y3,x4,y4;
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		double ab_slope = (y2-y1)/(x2-x1);
		double cd_slope = (y4-y3)/(x4-x3);
		if(ab_slope == cd_slope){
			cout<<"YES"<<endl;
		}else{
			cout<<"NO"<<endl;
		}
		
	}
	return 0;
}