Question

Find the matrix that represents a skew dilation of R2 along the line y = 2x with scale factor 3, and the line y=0.5x with scale factor -3.

Answer 1

So i have Ax=3x and Ax=-3x
(A-3)x=0
(A+3)x=0

Answer 2

when (A-3)x=0 x= (1,2)
when (A+3)x=0 x= (2,1)