I am using Excel and plotting a line of best fit for Resistance vs. Bandwidth. I used the LINEST function to get my values, and it shows that it would cross the y-intercept at around 288 Hz. I am just wondering why when using resistance vs bandwidth it would never cross at the origin. That is what my manual says, and I guess that I am just confused as to why they could both never be zero at the same time. Am I over thinking this, could someone just clarify it for me.