Solve for k.
M=-8j-9k+9
AK= m-8j\-9
BK= m+8j\-9
CK= m+8j-9\-9
DK= m-8j+9\-9
M=-8j-9k+9
AK= m-8j\-9
BK= m+8j\-9
CK= m+8j-9\-9
DK= m-8j+9\-9