The equation of a horizontal line passing through a specific point can be easily determined. For a horizontal line, the y-coordinate remains constant regardless of the x-coordinate. In this case, we want a horizontal line that passes through the point (3, 8).
Since the y-coordinate of the point is 8, the equation of the horizontal line will simply be:
y = 8
This means that for any value of x, the value of y will always be 8. So, whether x is 1, 3, 10, or any other number, the line will always be at a height of 8 on the y-axis. Visualizing this, you would see a straight line running horizontally across the graph at the y-value of 8.