Line segment ab has a length of 4 units. it is translated 2 units to the right on a coordinate plane to obtain line segment a'b'. what is the length of a'b'?

Amanufacturing company produces engines for light aircraft. the graph shows the number of engines produced each year since the company started operations. the data plot can be represented by the function . based on the scatter plot, we can predict that in the ninth year, the company will produce engines.