Expression 1: 1 half less than floor left parenthesis, mod left parenthesis, floor left parenthesis, StartFraction, "y" Over 17 , EndFraction , right parenthesis times 2 Superscript, left parenthesis, negative 17 times floor left parenthesis, "x" , right parenthesis minus mod left parenthesis, floor left parenthesis, "y" , right parenthesis , 17 , right parenthesis , right parenthesis , Baseline , 2 , right parenthesis , right parenthesis12<floormodfloory17·2−17·floorx−modfloory,17,2