Set 13: Linear Functions

Choice A is correct. Choice A is the correct answer. Use the slope formula and solve for $k$. 1. Formula: $m = \frac{y_2 - y_1}{x_2 - x_1}$ 2. Substitute: $4= \frac{k - 3}{4 - 2}$ 3. Simplify: $4= \frac{k - 3}{2}$ 4. Solve: Multiply by 2 $\rightarrow 8 = k - 3$. Add 3 $\rightarrow k = 11$. Strategic Tip: Set up the equation with the unknown variable and solve it like any other algebra problem. Choice B is incorrect because it might result from not multiplying by the run. Choice C is incorrect because it might result from addition errors. Choice D is incorrect because it might result from calculation errors.