#include <iostream>
using namespace std;

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