#include <cstdio>
using namespace std;

int main(){
	int N;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	double dx1, dy1, dx2, dy2;
	
	scanf("%d", &N);
	
	for(int i = 0; i < N; i++){
		scanf("%lf%lf%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);
		dx1 = x2 - x1; dy1 = y2 - y1;
		dx2 = x4 - x3; dy2 = y4 - y3;
		if(dx1 * dy2 == dx2 * dy1) printf("YES\n");
		else printf("NO\n");
	}
	
	return 0;
}