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

int n;
double x1,x2,x3,x4,y1,y2,y3,y4;
double a1=0,a2=0;
scanf("%d",&n);

for(int i=0;i<n;i++)
{
cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
a1=(y2-y1)/(x2-x1);a2=(y3-y4)/(x3-x4);
if(a1==a2)cout<<"YES"<<endl;
else cout<<"NO"<<endl;
}

return 0;
}