#include <iostream>
#include<cmath>
#include<algorithm>
#include<string>
#include<map>
#include<vector>
using namespace std;
int main (void) {
    int n;
    double x1,x2,x3,x4,y1,y2,y3,y4;
    cin >> n;
    while(n--){
        cin >> x1 >> y1 >> x2 >> y2 >> x3 >> y3 >> x4 >> y4;
        if(x1==x2&&x3==x4||(y1-y2)/(x1-x2)==(y3-y4)/(x3-x4))    cout << "YES\n";
        else    cout << "NO\n";
    }
    return 0;
}

