document.write( "Question 824661: Find the equation of the line which passes through the points P(0,a) and Q(a,2a) \n" ); document.write( "
Algebra.Com's Answer #496639 by MathLover1(20850)\"\" \"About 
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first find a slope:\r
\n" ); document.write( "\n" ); document.write( "Slope \"m+=+%28y1-y2%29%2F%28x1-x2%29\" \r
\n" ); document.write( "\n" ); document.write( "given: \"x1=0\" and \"x2=a\", \"y1=a\" and \"y2=2a\",\r
\n" ); document.write( "\n" ); document.write( "\"m+=+%28a-2a%29%2F%280-a%29\"\r
\n" ); document.write( "\n" ); document.write( " \"m+=+%28-a%29%2F%28-a%29\"\r
\n" ); document.write( "\n" ); document.write( "\"m+=1\"\r
\n" ); document.write( "\n" ); document.write( "so,
\n" ); document.write( " \"y-intercept+=+a\" because is given point P(0,a), menas if \"x=0\" => \"y=a\"\r
\n" ); document.write( "\n" ); document.write( " --> \"y+=+x+%2B+a\"\r
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