Set 9: Linear Functions (Advanced)

Choice A is correct. Choice A is the correct answer. Use slope formula. 1. Substitute: $2= \frac{10 - k}{5 - 2}$. 2. Simplify: $2= \frac{10 - k}{3}$. 3. Solve: $6= 10 - k \rightarrow k = 4$. Strategic Tip: You can also work backwards: If slope is 2, going back 3 steps in x (5 to 2) means going back 6 steps in y (10 to 4). Choice B is incorrect. Choice C is incorrect. Choice D is incorrect.