#include<iostream>
using namespace std;

int main(void){

	double n,x1,x2,x3,x4,y1,y2,y3,y4,x5,x6,y5,y6;

	cin>>n;
	for(int i=0;i<n;i++){
	cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
	x5=x2-x1;x6=x4-x3;
	y5=y2-y1;y6=y4-y3;
	if(y5/x5==y6/x6) cout<<"YES"<<endl;
	else cout<<"NO"<<endl;
	
	}
    return 0;
}