#include <iostream>

using namespace std;
int main(void){
    // Here your code !
int n;
double x1,x2,x3,x4,y1,y2,y3,y4;
cin>>n;
for(int i=0;i<n;i++){
cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
if(x1==x2&&x3==x4) cout<<"YES"<<endl;
else if(y1==y2&&y3==y4) cout<<"YES"<<endl;
else if( (y2-y1)/(x2-x1) == (y4-y3)/(x4-x3)  )
cout<<"YES"<<endl;
else cout<<"NO"<<endl;
}
}