Expression 4: "y" equals negative 13.5 times sine left parenthesis, left parenthesis, 2 times StartFraction, pi Over 11 , EndFraction , right parenthesis left parenthesis, "x" minus 9.8 , right parenthesis , right parenthesis plus 67.5y=−13.5·sin2·π11x−9.8+67.5
4
Expression 5: "y" equals negative 13.5 times sine left parenthesis, left parenthesis, 2 times StartFraction, pi Over 12 , EndFraction , right parenthesis left parenthesis, "x" minus 9.8 , right parenthesis , right parenthesis plus 67.5y=−13.5·sin2·π12x−9.8+67.5
5
Expression 6: negative 13.4 5 times cosine left parenthesis, StartFraction, "x" Over left parenthesis, 6 pi , right parenthesis , EndFraction minus 1 , right parenthesis plus 53.3−13.45·cosx6π−1+53.3
6
Expression 7: "y" equals negative 13.4 5 times sine left parenthesis, left parenthesis, StartFraction, pi Over 6 , EndFraction , right parenthesis left parenthesis, "x" plus 2 , right parenthesis , right parenthesis plus 67.7 5y=−13.45·sinπ6x+2+67.75