#include <iostream>
#include <stdio.h>
using namespace std;
int main()
{
    int N;
	cin>>N;
	while(N--){
		double x1,y1,x2,y2,x3,y3,x4,y4;
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		(double)(y1-y2)*(x3-x4)==(double)(y3-y4)*(x1-x2)?cout<<"YES"<<endl:cout<<"NO"<<endl;
	}
    return 0;
}