Hi!

I've been trying to work this out all evening and still don't know where I'm going wrong. If someone could give me some tips on how to work it out I would be so grateful!

We were given a table of results from an experiment and have to plot the graph and draw the line of best fit, which I have done and tried to copy on excel to post here. Then it asks to find the intercept of the line, this is the part I am stuck on as the line hasn't crossed the y-axis. Can someone please tell me what I'm doing wrong, and what I should be doing? Thanks so much in advance! The table and graph I plotted are as follows:

Temperature (ºC) Resistance (Ohms) 20 18.1 40 21.0 60 23.8 80 26.9 100

30.0