Both sides of an equation have linear expressions. The graph of one line has a positive slope. The graph of the other line has a negative slope. What are the possible number of intersections for this system? 0 1 2 infinite

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