Pleas help me with this exercises(this is not a homework):(adsbygoogle = window.adsbygoogle || []).push({});

Determine whether the points lie on a straight line.

a) A(5,1,3), B(7,9,-1), C(1,-15,11)

b) K(0,3,-4) L(1,2,-2), M(3,0,1)

Should I draw the graph, then find the slopes?

Or is there any other way to approach?

Pleas help!

By the way, I got straight A's for Calc I,II. and every body keep telling me that Calc III is easier compare to Calc II. but, I feel it's so hard, and I don't know what to do. can some one give me some advice?thanks.

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# Homework Help: 3-D coordinate systems problem

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