Letf : R → R3³ be defined by f(x) = (-7x, -3x, 8x). Is f a linear transformation? a. f(x + y) = f(x) + f(y) = + Does f(x + y) = f(x) +f(y) for all x, y ER? choose b. f(cx) = c(f(x)) = Does f(cx) = c(f(x)) for all c, x ER? choose c. Isf a linear transformation? choose

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