1. **State the problem:** Solve the linear equation $3x - y = 0$ for $y$ in terms of $x$. 2. **Formula and rules:** To solve for $y$, isolate $y$ on one side of the equation by performing inverse operations. 3. **Isolate $y$:** $$3x - y = 0$$ Subtract $3x$ from both sides: $$3x - y - 3x = 0 - 3x$$ $$-y = -3x$$ 4. **Divide both sides by $-1$ to solve for $y$:** $$\cancel{-}y = \cancel{-}3x$$ $$y = 3x$$ 5. **Final answer:** The solution for $y$ in terms of $x$ is: $$y = 3x$$ This means for any value of $x$, $y$ is three times that value.