`${a_1}` left parenthesis, 6 , 8 , right parenthesis6,8
Label:
27
`${b_1}` left parenthesis, 7.5 , 8 , right parenthesis7.5,8
Label:
28
`${c_1}` left parenthesis, 6 , 7 , right parenthesis6,7
Label:
29
`${d_1}` left parenthesis, 7.5 , 7 , right parenthesis7.5,7
Label:
30
Expression 31: "x" minus 5 equals 0.1 left parenthesis, "y" minus 7.2 , right parenthesis squared left brace, 6.1 less than "y" less than 8.1 , right bracex−5=0.1y−7.226.1<y<8.1
31
Expression 32: "x" minus 8.4 equals negative 0.1 left parenthesis, "y" minus 7.2 , right parenthesis squared left brace, 6.1 less than "y" less than 8.1 , right bracex−8.4=−0.1y−7.226.1<y<8.1