What will be the coordinates of B' if the triangle below is reflected across the y-axis? Pre-image Points: A(1.-4) B(2, -1) C(6,-4) A.(-1,2) B.(1,-2) C.(-2,-1) D.(2,1)​

What will be the coordinates of B if the triangle below is reflected across the yaxis Preimage Points A14 B2 1 C64 A12 B12 C21 D21 class=