#include <iostream>
#include <math.h>

using namespace std;


int main()
{
	double x1,x2,x3,y1,y2,y3,x4,y4;
	int n;
	double AB,CD; 

	cin>>n;

	for(int i=0;i<n;i++)
	{
		cin>>x1>>y1>>x2>>y2>>x3>>y3>>x4>>y4;
		AB=(y2-y1)/(x2-x1);
		CD=(y4-y3)/(x4-x3);

		if((fabs(AB-CD))<0.00001)
			cout<<"YES"<<endl;
		else
			cout<<"NO"<<endl;


	}
	

	return 0;
}