document.write( "Question 878342: If three straight lines x+2y-1=0 >>> x-y+2=0 >>> ax-y+3=o meet at one point then a= \n" ); document.write( "

Algebra.Com's Answer #529871 by ewatrrr(24785) $\"\"$ $\"About$

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document.write( "-.5x + .5 = x+2,  x = -1 and y = 1
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document.write( "y =  ax+3
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document.write( "1 = -a + 3
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document.write( "a = 2
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document.write( "y = 2x+3 (Purple Line)
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