Determine Whether the Given Argument Is Valid or Invalid $\lor$

Essay

determine whether the given argument is valid or invalid. If it is valid, provide a derivation of the conclusion from the premises. If it is invalid, provide a counterexample.
-1. I • (J $\lor$ H)
2. I ⊃ ∼J
3. H ≡ (K $\lor$ I) / K