#include <iostream>
using namespace std;

int main() {
	int N;
	cin>>N;
	for(;N--;){
		double x1,y1,x2,y2,x3,y3,x4,y4;
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		if(x2-x1!=0&&x4-x3!=0){
			double a1=(y2-y1)/(x2-x1);
			double a2=(y4-y3)/(x4-x3);
			if(a1==a2) cout<<"YES"<<endl;
			else cout<<"NO"<<endl;
		}else if(x2-x1==0&&x4-x3==0)
			cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}
}