Expression 7: "b" Subscript, 2 , Baseline equals StartFraction, "o" "m" Subscript, "r" , Baseline minus "o" Subscript, "r" , Baseline Over "o" minus 1 , EndFractionb2=omr−oro−1
equals=
negative 3−3
7
Expression 8: "a" Subscript, 1 , Baseline left parenthesis, "x" , right parenthesis equals "m" Subscript, 1 , Baseline "x" plus "b" Subscript, "r" , Baseline left brace, 0 less than or equal to "x" less than or equal to "o" , right bracea1x=m1x+br0≤x≤o
8
Expression 9: "a" Subscript, 2 , Baseline left parenthesis, "x" , right parenthesis equals "m" Subscript, 2 , Baseline "x" plus "b" Subscript, 2 , Baseline left brace, "o" less than "x" less than or equal to 1 , right bracea2x=m2x+b2o<x≤1