Expression 5: left parenthesis, "x" plus 1.8 , right parenthesis squared plus left parenthesis, "y" minus 4 , right parenthesis squared equals 0.0 1x+1.82+y−42=0.01
5
Expression 6: "y" equals 3 quarters left brace, negative 1 less than "x" less than 0 : "x" , right brace plus 2y=34−1<x<0:x+2
6
Expression 7: "y" equals negative 3 quarters left brace, negative 4 less than "x" less than negative 3 : "x" , right brace minus 1y=−34−4<x<−3:x−1
7
Expression 8: "y" equals left brace, negative 2.4 less than "x" less than negative 1.6 : "x" , right brace squared plus 4 "x" positive 7.2y=−2.4<x<−1.6:x2+4x+7.2
