If the lines a1x + b1y = c1 and a2x + b2y = c2are parallel, what can you say about the
Chapter 6, Problem 73(choose chapter or problem)
If the lines a1x + b1y = c1 and a2x + b2y = c2are parallel, what can you say about the values of`a1a2b1b2` , `c1c2b1b2` , and `a1a2c1c2` ?
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