document.write( "Question 173186This question is from textbook Introductory Algebra
\n" ); document.write( ": Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither.\r
\n" ); document.write( "\n" ); document.write( "3x - 8y = -18
\n" ); document.write( "32x + 12y = -18 \n" ); document.write( "
Algebra.Com's Answer #128032 by Alan3354(69443)\"\" \"About 
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Determine whether the graphs of the equations are parallel lines, perpendicular lines, or neither.
\n" ); document.write( "3x - 8y = -18
\n" ); document.write( "32x + 12y = -18
\n" ); document.write( "---------------
\n" ); document.write( "Find the slope, m, of both by putting them into slope-intercept form
\n" ); document.write( "3x - 8y = -18
\n" ); document.write( "8y = 3x + 18
\n" ); document.write( "y = (3/8)x + 9/4
\n" ); document.write( "m1 = 3/8
\n" ); document.write( "--------
\n" ); document.write( "32x + 12y = -18
\n" ); document.write( "12y = -32x - 18
\n" ); document.write( "6y = -16x - 9
\n" ); document.write( "y = (-8/3)x - 3/2
\n" ); document.write( "m2 = -8/3
\n" ); document.write( "That's the negative inverse of m1, so they're perpendicular\r
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