Expression 1: "y" equals mod left parenthesis, 4 StartAbsoluteValue, "x" , EndAbsoluteValue , 4 , right parenthesis left brace, "y" less than or equal to 2 , right brace Has graph. To audio trace, press ALT+T.y=mod4x,4y≤2
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Expression 2: "y" equals mod left parenthesis, negative 4 StartAbsoluteValue, "x" , EndAbsoluteValue , 4 , right parenthesis left brace, "y" less than or equal to 2 , right brace Has graph. To audio trace, press ALT+T.y=mod−4x,4y≤2