#include<cstdio>
#include<iostream>

using namespace std;

int main(void){

	long double x1,y1,x2,y2,x3,y3,x4,y4;
	int n;

	cin>>n;

	for(int i=0;i<n;i++){
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		if((x2-x1)/(y2-y1)==(x4-x3)/(y4-y3)) cout<<"YES"<<endl;
		else cout<<"NO"<<endl;
	}

	return 0;
}