document.write( "Question 919309: A straight line that is parallel to line -x+2y+2=0 and passes through the points (a,1) and (2,2).find the value of a. \n" ); document.write( "
Algebra.Com's Answer #557632 by ewatrrr(24785)\"\" \"About 
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the standard slope-intercept form for an equation of a line is
\n" ); document.write( "\"y+=+highlight_green%28m%29x+%2B+highlight%28b%29\" where m is the slope and b the y-intercept.
\n" ); document.write( "-x+2y+2=0 0r y = (1/2)x - 1, m = 1/2
\n" ); document.write( ".........New Line(Slope also 1/2, Lines parallel have same slope)
\n" ); document.write( " (a,1) and
\n" ); document.write( "(2,2) m =\"%28y%5B1%5D+-+y%5B2%5D%29%2F%28x%5B1%5D+-+x%5B2%5D+%29\" = \"-1%2F%28a-2%29+=+1%2F2\", \"a-2+=+-2\",\"+highlight_green%28a=0%29\" \r
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