#include <iostream>

using namespace std;


int main(int argc, char *argv[]){
	int n;
	double x1 ,y1 ,x2 ,y2 ,x3 ,y3 ,x4 ,y4;
	cin>>n;
	for (int i = 0; i < n; ++i){
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		double s1=(y2-y1)/(x2-x1), s2=(y4-y3)/(x4-x3);
		if(s1==s2) cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}

    return 0;
}