document.write( "Question 987513: Write an equation of a line (a) parallel to and (b) perpendicular to the line 2x+3y=-6 and containing the point (-4, -5).\r
\n" ); document.write( "\n" ); document.write( "I know that the slope for (a) is -2x/3 and the slope for (b) is 3x/2
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Algebra.Com's Answer #608264 by josmiceli(19441)\"\" \"About 
You can put this solution on YOUR website!
\"+2x+%2B+3y+=+-6+\"
\n" ); document.write( "\"+3y+=+-2x+-+6+\"
\n" ); document.write( "\"+y+=+-%282%2F3%29%2Ax+-+2+\"
\n" ); document.write( "-------------------
\n" ); document.write( "Any parallel line has slope = \"+-2%2F3+\"
\n" ); document.write( "Any perpendicular line has slope = \"+-1%2Fm+=+3%2F2+\"
\n" ); document.write( "-------------------
\n" ); document.write( "( -4,-5 )
\n" ); document.write( "(a)
\n" ); document.write( "Use general point-slope formula
\n" ); document.write( "\"+%28+y+-%28-5%29+%29+%2F+%28+x+-%28-4+%29+%29+=+-2%2F3+\"
\n" ); document.write( "\"+%28+y+%2B+5+%29+%2F+%28+x+%2B+4+%29+=+-2%2F3+\"
\n" ); document.write( "\"+3%2A%28+y+%2B+5+%29+=+-2%2A%28+x+%2B+4+%29+\"
\n" ); document.write( "\"+3y+%2B+15+=+-2x+-+8+\"
\n" ); document.write( "\"+3y+=+-2x+-23+\"
\n" ); document.write( "\"+y+=+-%282%2F3%29%2Ax+-+23%2F3+\"
\n" ); document.write( "-------------------------
\n" ); document.write( "(b)
\n" ); document.write( "\"+%28+y+-%28-5%29+%29+%2F+%28+x+-%28-4+%29+%29+=+3%2F2+\"
\n" ); document.write( "\"+%28+y+%2B+5+%29+%2F+%28+x+%2B+4+%29+=+3%2F2+\"
\n" ); document.write( "\"+2%2A%28+y+%2B+5+%29+=+3%2A%28+x+%2B+4+%29+\"
\n" ); document.write( "\"+2y+%2B+10+=+3x+%2B+12+\"
\n" ); document.write( "\"+2y+=+3x+%2B+2+\"
\n" ); document.write( "\"+y+=+%283%2F2%29%2Ax+%2B+1+\"
\n" ); document.write( "-------------------
\n" ); document.write( "check:
\n" ); document.write( "(a)
\n" ); document.write( "(-4,-5)
\n" ); document.write( "\"+y+=+-%282%2F3%29%2Ax+-+23%2F3+\"
\n" ); document.write( "\"+-5+=+-%282%2F3%29%2A%28-4%29+-+23%2F3+\"
\n" ); document.write( "\"+-5+=+8%2F3+-+23%2F3+\"
\n" ); document.write( "\"+-15%2F3+=+-15%2F3+\"
\n" ); document.write( "OK
\n" ); document.write( "(b)
\n" ); document.write( "(-4,-5)
\n" ); document.write( "\"+y+=+%283%2F2%29%2Ax+%2B+1+\"
\n" ); document.write( "\"+-5+=+%283%2F2%29%2A%28-4%29+%2B+1+\"
\n" ); document.write( "\"+-5+=+-6+%2B+1+\"
\n" ); document.write( "\"+-5+=+-5+\"
\n" ); document.write( "OK\r
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