Determine whether the points lie on a straight line. Answer Yes or No .

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? Yes No 1. $A(0,0,0),$ $B(6,-3,1),$ and $C(-18,9,-2).$

? Yes No 2. $D(6,-3,1),$ $E(7,-1,4),$ and $F(11,7,16).$

? Yes No 3. $G(-1,0,1),$ $H(1,6,7),$ and $I(2,18,19).$

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Note: You only have two attempts at this problem.

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