Expression 5: "y" greater than "x" squared plus 2 left brace, "y" less than 4 , right bracey>x2+2y<4
5
Expression 6: negative 6 less than or equal to "x" less than or equal to negative 2 left brace, negative 1 less than "y" less than 1 , right brace−6≤x≤−2−1<y<1
6
Expression 7: 0 less than or equal to "y" less than or equal to 2 "x" minus 4 left brace, "x" less than 4 , right brace0≤y≤2x−4x<4