Let a=⟨−1,−2,3⟩a=⟨−1,−2,3⟩ and b=⟨−5,4,−4⟩b=⟨−5,4,−4⟩. Show that there are scalars ss and tt so that sa+tb=⟨−18,20,−22⟩sa+tb=⟨−18,20,−22 ⟩ You might want to sketch the vectors to get some intuition.

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where is the graph

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-1/4 > -1 2/3. -1/4 is greater than -1 2/3 because it is closer to 0 on the number line.