document.write( "Question 1070283: if L1:y = -2x + 3 and L2:y = ax + 4, then find the value of a if:
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\n" ); document.write( "\n" ); document.write( " b) L2 is perpendicular to L2
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Algebra.Com's Answer #685416 by josgarithmetic(39617)\"\" \"About 
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Line1 has slope \"-2\".
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\n" ); document.write( "\n" ); document.write( "If the lines parallel, then \"-2=a\".
\n" ); document.write( "If perpendicular, then \"%28-2%29%28a%29=-1\".
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