What the determinant of a singular matrix?

Can we invert a singular matrix?

All reflections when inverted are....

A 30 degree rotation CW has the inverse...

An enlargement of sf 3 centre (0,0) has the inverse....

To find an unknown value in a singular matrix, e.g. [-2 4][1 p] , we use....

What is different when we find an unknown value in a non-singular matrix?

What is the formula for finding an inverse matrix? (Lets say M=[a b][c d])

M x M-1 = ....
and
M-1 x M = ....

B-1A-1 = ....

|A-1| = ....

For AX=B , if we have the matrices A and B, how would we find X?

What matrices represents the simultaneous equation 2x+3y =16 // -4x+y=3 ?

If we know M[x][y] = [16][3] , how do we find the values of x and y? (if we know M)