Abstract
In this paper, we firstly give improvement of Hermite-Hadamard type and Fejer type inequalities. Next, we extend Hermite-Hadamard type and Fejer types inequalities to a new class of functions. Further, we give bounds for newly defined class of functions and finally presents refined estimates of some already proved results. Furthermore, we obtain some new discrete inequalities for univariate harmonic convex functions on linear spaces related to a variant most recently presented by Baloch et al. of Jensen-type result that was established by S. S. Dragomir.