#include <iostream>

using namespace std;

int main() {
	double x1,x2,x3,x4;
	double y1,y2,y3,y4;
	double incAB, incCD;
	int count=0;
	while(cin>>count, !cin.eof()) {
		for(int i=0; i<count; i++) {
			cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
			incAB = (x2-x1) / (y2-y1);
			incCD = (x4-x3) / (y4-y3);
			if(incAB == incCD) {
				cout<<"YES"<<endl;
			}else{
				cout<<"NO"<<endl;
			}

		}
	}
	return 0;
}