A line passes through the points (3, k) and (7, 10) and has a slope of 2. What is the value of k?

✓ Correct Answer: Option C

The slope formula is (y2 - y1) / (x2 - x1). So, (10 - k) / (7 - 3) = 2. This simplifies to (10 - k) / 4 = 2. Multiplying by 4 gives 10 - k = 8, so k = 2.