#include<iostream>

using namespace std;

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