Choice A is the correct answer. Find slope, then intercept.

1. Slope: $m = \frac{10 - 4}{3 - 1} = \frac{6}{2} = 3$.
2. Point-Slope: Use $(1, 4)$. $y - 4 = 3(x - 1)$.
3. Convert: $y - 4 = 3x - 3 \rightarrow y = 3x + 1$.

💡 Strategic Tip: Check your answer by plugging in the second point: $10 = 3(3) + 1$. Correct.

Choice B is incorrect because sign error. Choice C is incorrect because slope error. Choice D is incorrect because intercept error.