Expression 4: "x" equals 10 plus "h" left brace, negative 5 less than or equal to "y" less than or equal to 5 , right bracex=10+h−5≤y≤5
4
Expression 5: "y" equals 5 left brace, negative 10 plus "h" less than or equal to "x" less than or equal to 10 plus "h" , right bracey=5−10+h≤x≤10+h
5
Expression 6: "y" equals negative 5 left brace, negative 10 plus "h" less than or equal to "x" less than or equal to 10 plus "h" , right bracey=−5−10+h≤x≤10+h