document.write( "Question 811800: determine whether the graphs of the equation are parallel, perpendicular, or neither\r
\n" ); document.write( "\n" ); document.write( "a. y=2x+5
\n" ); document.write( " 2x+y=9 \r
\n" ); document.write( "\n" ); document.write( "b. 3x+4y=7
\n" ); document.write( " 4x=3y-8\r
\n" ); document.write( "\n" ); document.write( "please help me figure this out, my teacher gives us take home tests but she does not really do a lesson on anything before she hands us the test. I am not really good at math from the beginning so i am really struggling here. if anyone could please help me out i would really appreciate it! Thank you so much!!!
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Algebra.Com's Answer #488898 by richwmiller(17219)\"\" \"About 
You can put this solution on YOUR website!
parallel-- have the same slope
\n" ); document.write( "perpendicular --the slopes multiplied together =-1
\n" ); document.write( "neither they cross and aren't perpendicular \r
\n" ); document.write( "\n" ); document.write( "a. y=2x+5
\n" ); document.write( "2x+y=9
\n" ); document.write( "y=-2x+9
\n" ); document.write( "not perpendicular nor parallel
\n" ); document.write( "meet at
\n" ); document.write( "x = 1, y = 7
\n" ); document.write( "b. 3x+4y=7
\n" ); document.write( "4y=-3x+7
\n" ); document.write( "y=-3/4x+7/4\r
\n" ); document.write( "\n" ); document.write( "4x=3y-8
\n" ); document.write( "3y=4x+8
\n" ); document.write( "y=4/3x+8/3
\n" ); document.write( "they are perpendicular
\n" ); document.write( "-3/4*4/3=-1
\n" ); document.write( "x = -11/25, y = 52/25\r
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