Line b passes through points (3, 5) and (10, 7). Line c is parallel to line b. What is the slope of line c?

The slope of a line passing through two points (x₁, y₁) and (x₂, y₂) is given by the formula:

slope = (y₂ - y₁) / (x₂ - x₁)

For line b, the points are (3, 5) and (10, 7). Plugging these values into the formula:

slope of line b = (7 - 5) / (10 - 3) = 2 / 7

Since line c is parallel to line b, it will have the same slope. Therefore, the slope of line c is also 2 / 7.