Expression 3: left parenthesis, "x" minus 2.5 , right parenthesis squared plus left parenthesis, "y" minus 1.5 , right parenthesis squared equals 0.9x−2.52+y−1.52=0.9
3
Expression 4: left parenthesis, "x" plus 2.5 , right parenthesis squared plus left parenthesis, "y" minus 1.5 , right parenthesis squared equals 0.9x+2.52+y−1.52=0.9
4
Expression 5: "x" squared equals 9 "y" plus 35 left brace, negative 3.6 less than "x" less than 3.6 , right bracex2=9y+35−3.6<x<3.6