#pragma GCC optimize("Ofast")
#pragma GCC target("avx2")

#define rd_init() char*rp=({char*mmap();mmap(0l,1l<<25,1,2,0,0ll);})
#define rd() ({int _v=0,_c;while(_c=*rp++-48,_c>=0)_v=_v*10+_c;_v;})
#define rd_signed() ({int _s=*rp=='-'&&++rp,_v=rd();_s?-_v:_v;})
#define repeat(e) for(typeof(e)_=e;_--;)

char wbuf[1<<25];

int main(){
	char*wp=wbuf;
	rd_init();
	int t=rd();
	repeat(t){
		long ax=rd_signed();
		long ay=rd_signed();
		long bx=rd_signed();
		long by=rd_signed();
		long cx=rd_signed();
		long cy=rd_signed();
		if(ay+by?(ax*by+ay*bx)*cx==(ax*bx-ay*by)*cy:cy==0&&cx>0){
			*(int*)wp='\nseY';
			wp+=4;
		}else{
			*(int*)wp='\noN';
			wp+=3;
		}
	}
	write(1,wbuf,wp-wbuf);
	_exit(0);
}