document.write( "Question 111434: Determine which two equations represent parallel lines.
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document.write( "(a) y = 9x – 9 (b) y = –9x + 9 (c) y = 9x + 4 (d) y = x – 9\r
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Algebra.Com's Answer #81263 by jim_thompson5910(35256)![]() ![]() ![]() You can put this solution on YOUR website! Since a) and c) have equal slopes of 9, this means these two lines are parallel \n" ); document.write( " |