Identify the function in the graph. (1 point) Responses f(x)=cos(4x) cosine left parenthesis 4 x right parenthesis f(x)=sin(x8) fsine left parenthesis Start Fraction x over 8 End Fraction right parenthesis f(x)=cos(8x) f left parenthesis x right parenthesis equals cosine left parenthesis 8 x right parenthesis f(x)=sin(8x)