#include <cstdio>
using namespace std;

int main(){
	int t;
	double x1, y1, x2, y2, x3, y3, x4, y4;
	scanf("%d", &t);
	while(t--){
		scanf("%lf%lf%lf%lf%lf%lf%lf%lf", &x1, &y1, &x2, &y2, &x3, &y3, &x4, &y4);
		printf("%s\n", ((x2 - x1) * (y4 - y3) == (x4 - x3) * (y2 - y1))? "YES" : "NO");
	}
	return 0;
}