I can't seem to get graphs as I haven't really done many before. Must they start at 0 for both axes?
Also for 2007 concave mirror experiment can anyone tell me how I'm messing up? I took the data, got the inverse, and plotted it but it doesn't look much like the marking scheme one. I get an f value of ~13.9 (i've done it twice) which is a fair bit off the answer - 12.
This is my first attempt. I rounded numbers off quite early.
And my second attempt gave me a similar value but those two outliers weren't quite as serious.