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Let L in R 3 be the line through the origin spanned by the vector v =   1 1 3  . Find the linear equations that define L, i.e., find a system of linear equations whose solutions are the points in L. (7) Give an example of a linear transformation from T : R 2 → R 3 with the following two properties: (a) T is not one-to-one, and (b) range(T) =      x y z   ∈ R 3 : x − y + 2z = 0    ; or explain why this is not possible. If you give an example, you must include an explanation for why your linear transformation has the desired properties.

1 (6) Let L in Rº be the line through the origin spanned by the vector v = 1 . Find 3 the linear equations that define L, i.e

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Sol (0,0,0) be the line which spared by v= (3) 3 Equation of line: Y() -- (0,9,0}+t (!1,3) Yet(t, t ,3t): (2,9, 2) = [t, t,

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