Question

Scientists measured the annual forest loss (in square kilometers) in Indonesia from 2000–2012. They found the regression line

forest loss=7500+(1021×years since 2000)

for predicting forest loss in square kilometers from years since 2000.

1. What is the slope of this line? Round to the whole number.

slope=

Answer 1

The slope of this line is 1021.

Explanation:

A regression line has the following format:

y = b + ax

In which a is the slope, that is, how much y changes with a variation of a single unit in x.

In this problem, our line is:

forest loss=7500+1021x

In which x is the number of years after 2000.

So the slope of this line is 1021.