We were asked to choose a topic, then we collect and organize data with at least 15 points, and graphed labeled the x-axis and the y-axis. So I decided to choose the population in the USA.
That's how my graph looks like
After that we were asked to split the data into 3 equal intervals, then we had to find a line of best fit for each of the 3 intervals
My line of best fit in Table 1 was 40 and 50. For table 2, was 70 and 90. Finally for table 3, it was 130 and 160.
After that we had to find the slope and the y-intercept for the data from each interval from the line of best fit that we chose.