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document.write( "Hi, \n" );
document.write( "4x=2y+8 , 4x-2y = 8 is the standard form \n" );
document.write( "Solving for y gives one the slope-intercept form, which is useful: \n" );
document.write( " y = 2x - 4, y = mx + b, slope m = 2 and y-intercept is -4.