Set 1: Linear Functions

Choice A is correct. Choice A is the correct answer. Set $x=0$ to find the y-intercept. 1. Method: The y-intercept occurs where $x = 0$. 2. Substitute: $3(0) + 4 y = 12 \rightarrow 4 y = 12$. 3. Solve: $y = 3$. Strategic Tip: You can also convert to slope-intercept form ($y = -\frac{3}{4}x + 3$), but setting $x=0$ is faster. Choice B is incorrect because it's the coefficient of y. Choice C is incorrect because it's the wrong sign. Choice D is incorrect because it's the constant term before dividing.