Numerical methods and Computing

4-How many right answers can we get for X and Y ? - 4) x+y=2 2x+2y=4 1)One 2) Two 3) Zero 4) Infinite 5)? 5-Which one is an Identity matrix? 1) (1bc1) 2) (1001) 4) (0110) 5)? 3 -What is the goal of this equations? (abcd)(ef)=(gh)(abcc)(xyzt)=(1001)ax+bz=1ay+bt=0cx+dz=0cc+dt=1(dbca)?adbc1(dbca)(abcd)=(1001) 1)Finding out the Transpose of a matrix 2) Finding out the inverse of a matrix 3) Both 4)non 5)