Final answer:
To determine the equation of the line passing through the point (4,2), we need either another point or the slope.
Step-by-step explanation:
The equation of the line passing through the point (4,2) can be determined using the point-slope form of a linear equation: y - y1 = m(x - x1). In this case, we have x1 = 4, y1 = 2. We need to find the slope (m) of the line. To do this, we can use the slope formula: m = (y2 - y1) / (x2 - x1). Since we only have one point, we can't calculate the slope. Hence, we cannot determine the equation of the line passing through the point (4,2) without another point or the slope.