#include<iostream>
using namespace std;
int main(){
int i,n;
double x1,y1,x2,y2,x3,y3,x4,y4;
cin>>n;
for(i=0;i<n;i++){
cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
if((x2-x1)*(y4-y3)==(x4-x3)*(y2-y1))cout<<"YES"<<endl;
else cout<<"NO"<<endl;
}
return 0;
}