#include <iostream>

using namespace std;

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