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