Can I build an equation from just few observations?

I have the following data that has 5 observations and 2 missed observatiosn. I want to build an equation that can help estimate the missed observations.

data<- structure(list(time = c(0L, 14L, 44L, 25L, 52L, 168L, 188L, NA,
NA, NA, NA, NA), bending = c(81.5, 70.23, 60.414, NA, NA, 49.05,
36.68, NA, NA, NA, NA, NA)), row.names = c(NA, -12L), class = "data.frame")


Note that the relationship might not be linear.

• In general the method used to do this are called "imputation". I'm not an expert in that area, but I doubt you could get a robust result with 5 data points. – Demetri Pananos Oct 1 '20 at 15:25