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For each of the following linear transformations, write down its matrix and describe the transformation

a) g(x,y)=(4x,6y)
b) h(x,y)=(x+2y,y)
c) k(x,y)=(y,x)
so I have worked out the matrices:
(4 0
0 6)

(1 2
0 1)

(0 1
1 0)
Not sure what the transformations would be?

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