The midpoint of AB is M (0,-3) if the coordinates of A are (6,-5) what are the coordinates of B

Free 100 points to whoever says “oof the porridges” if it’s not exact, your answer will be reported, first person gets brainliest

If f(x)=3x+1 and f^-1=x-1/3, then f^-1(7)=

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*