수식 4: "a" "x" plus "b" "y" plus "c" greater than 0ax+by+c>0
4
수식 5: "a" "x" plus "b" "y" plus "c" less than or equal to 0ax+by+c≤0
5
수식 6: "a" "x" plus "b" "y" plus "c" equals 0ax+by+c=0
6
수식 7: left parenthesis, 2 , 2 , right parenthesis , left parenthesis, 2 , 3 , right parenthesis , left parenthesis, 3 , 2 , right parenthesis , left parenthesis, 3.3 , 3.3 , right parenthesis , left parenthesis, 2.5 , 2.7 , right parenthesis , left parenthesis, 3.2 , 3.7 , right parenthesis2,2,2,3,3,2,3.3,3.3,2.5,2.7,3.2,3.7
7
수식 8: left parenthesis, negative 1 , negative 2 , right parenthesis , left parenthesis, negative 2 , negative 1 , right parenthesis , left parenthesis, negative 0.3 , negative 2 , right parenthesis , left parenthesis, negative 1.3 , negative 3.3 , right parenthesis , left parenthesis, negative 2.5 , negative 2.7 , right parenthesis , left parenthesis, negative 3.2 , negative 3.7 , right parenthesis−1,−2,−2,−1,−0.3,−2,−1.3,−3.3,−2.5,−2.7,−3.2,−3.7
