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document.write( "Hi \n" );
document.write( "Using the standard slope-intercept form for an equation of a line y = mx + b \n" );
document.write( " where m is the slope and b the y-intercept. \n" );
document.write( "what is the y- intercept for y = 1/2x -9 ? Pt(0,-9) \n" );
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