Expression 3: "m" equals StartFraction, "f" left parenthesis, 1.2 5 plus "h" , right parenthesis negative "f" left parenthesis, 1.2 5 , right parenthesis Over "h" , EndFractionm=f1.25+h−f1.25h
equals=
7.4 77.47
3
Expression 4: "y" equals "f" left parenthesis, 1.2 5 , right parenthesis plus "m" left parenthesis, "x" minus 1.2 5 , right parenthesisy=f1.25+mx−1.25