In this paper we introduce a new class of differential graded algebras named DG $\rho$-algebras and present Lie operations on this kind of algebras. We give two examples: the algebra of forms and the algebra of noncommutative differential forms of a $\rho$-algebra. Then we introduce linear connections on a $\rho$-bimodule $M$ over a $\rho$-algebra $A$ and extend these connections to the space of forms from $A$ to $M$. We apply these notions to the quantum hyperplane.