To find the equation of a line inclined at 130 degrees through the point (0,2), the slope must be calculated using the tangent of the angle, which is the tangent of 130 degrees. The standard form of the line's equation is y = mx + b, where m represents the slope and b is the y-intercept, which is 2 in this case. The slope derived from the angle will be negative, reflecting the line's downward inclination. Understanding the relationship between the slope and the angle is crucial for formulating the equation correctly. The discussion emphasizes the need to connect the slope with the line's equation format.