#include <iostream>
using namespace std;

int main() {
	int N;
	long double x[4],y[4];
	cin>>N;
	while(N--){
		for(int i=0;i<4;i++) cin>>x[i]>>y[i];
		long double y1=y[1]-y[0]; long double x1=x[1]-x[0];
		long double y2=y[3]-y[2]; long double x2=x[3]-x[2];
		if(y1*x2==y2*x1) cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}
	return 0;
}