What would it mean if the line of a linear regression graph went through the origin?

If it doesn't go through the origin and I make it go through the origin, what am I doing?

I was looking for the answer to this and all I came up with was that if the line goes through the origin, then the data obtained, conforms to the ideal.
As for what I'm doing when I alter the line to go through the origin, I don't know about that.

Thank you

If it goes through the origin, you have a direct relationship. y=kx

If you alter it to go through the origin, and it doesn't , you are fudging data is all I can think.

If the line of a linear regression graph goes through the origin, it means that the intercept of the line is zero. In other words, when the independent variable (x) is zero, the dependent variable (y) is also zero. This indicates a direct proportional relationship between the two variables.

When you alter the line to go through the origin, you are essentially forcing the model to pass through the point (0, 0). This can be done by subtracting the y-intercept value from the equation of the line. By doing this, you are assuming that the relationship between the variables starts at the origin and removing any constant offset. This can be useful when you have prior knowledge or theoretical reasons to believe that the relationship should start at zero.

It is important to note that forcing the line to go through the origin may not always be appropriate or meaningful, depending on the context and nature of the data. It should be done with caution and based on the specific situation and knowledge about the variables being studied.