\n" );
document.write( "Hi, \n" );
document.write( "which of the following points lies in the plane \n" );
document.write( "-2x+7y+2z=4? \n" );
document.write( "x = 1, y = 2, z = -4 works \n" );
document.write( "Pt(1,2,-4) \n" );
document.write( "My recommendation would be to substitute the x-values ,y-values and z-values \n" );
document.write( " into the EQ to see if they work