For each part, justify whether T: R R is it a linear transformation or not. a)T(x,...

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For each part, justify whether T: R R is it a linear transformation or not. a)T(x, y) = (x, xy) b)T(x, y) = (x, y) c)T(x, y) = (x+1, y) d)T(x, y) = (2.3) (x, y) For each part, justify whether T: R R is it a linear transformation or not. a)T(x, y) = (x, xy) b)T(x, y) = (x, y) c)T(x, y) = (x+1, y) d)T(x, y) = (2.3) (x, y)