Topic: linear trend line

Thank you for a great program.  I use it in an advanced high school physics class.  One thing I can't seem to get it to do correctly is this.  I have entered a point series to plot which it does nicely, but when I try to add a linear trend line, it plots the trend line incorrectly.  However if I use the polynomial fit and ignore the quadratic term it looks pretty good.  The trend line it gives me when I use "linear" is a near horizontal line and not even close to what it should be.  What am I doing wrong?  Thank you for you help.

Re: linear trend line

Please disregard my first post.  I found my error.  There is nothing wrong with the program...sorry.