Question 3
Smartphone users in millior
300-
드 250-
200
150-
100-
50-
0-
50
55
84
Smartphone Usage
152 155 158
191
205
229 232
259 264
2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021
Write the linear model for the data, in the form y = mx + b, where x is the number of
years since 2010 and Yis the number of smartphone users, in millions. Round the slope
and y-intercept to 1 decimal place. Use the variables x and Yin your answer.
X÷ π abab ()