Hi All,

Not sure if this is really algebra, it's more of a matricies question, but anyway:
consider: y1 = a11x1 + a12x2
y2 = a21x1 + a22x2

in the case: a11a22 - a12a21 = 0

Find the image L' of the straight line L in this case,
for L = {(x1,x2):x2 = mx1 + c

now I have a solution for this in my notes but I just don't really understand at all........