Remember, median is the middle California income from 1995 to 2002, as reported by the US Census Bureau. Draw a scatter plot and find the equation. What would you expect the median annual income of a California family to be in the year 2010? What are the meanings of the slope and the y-intercept of this problem? So the first thing you'd want to do, I just copied and pasted this image. We have to get the data in a form that the spreadsheet can understand it. So let's make some tables here.