นิพจน์ 3: "x" equals negative 2.4 left brace, 0 less than "y" less than 5 , right bracex=−2.40<y<5
3
นิพจน์ 4: "x" equals 2.5 left brace, 0 less than "y" less than 5 , right bracex=2.50<y<5
4
นิพจน์ 5: left parenthesis, StartFraction, left parenthesis, "x" minus .2 , right parenthesis squared Over 9 , EndFraction , right parenthesis plus left parenthesis, StartFraction, left parenthesis, "y" minus 3 , right parenthesis squared Over 16 , EndFraction , right parenthesis equals 1 left brace, 2.5 less than "y" less than 7 , right bracex−.229+y−3216=12.5<y<7