#include<iostream>
using namespace std;
int main(){
    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;

        double line1,line2;
        line1=(y2-y1)/(x2-x1);
        line2=(y4-y3)/(x4-x3);
        (line1==line2)? cout<<"YES"<<endl:cout<<"NO"<<endl;
    }
}