Imagine the line in your head continuing out to $$. How high do you think the line will be at that point?

The customer price index(cpi), which measures the cost of a typical package of customer goods,was 208.8 in 2011 and 244.1 in 2016.let x=11 corresponding to the year 2011 an estimate to cpi into 2013 and 2014. assume that the data can be modeled by a straight line and the trend to continue idenfinitely.use data points to find such a line and then estimate the requested quantities

Ithink i know it but i want to be sure so can you me out ?

Find the length of the normal and the angle it makes with the positive x-axis. (see pictured below)