Question

1. how much thwaites glacier melts in one year

discuss & write: how many meters does thwaites melt each year? explain how you used the graph and/or ruler to find this value.

1. building the linear function

discuss & write: complete the table to show how you expressed the average glacial thickness in terms slope and y - intercept.
years since 2020 average glacial thickness in terms of slope and y - intercept
0 2500 - ⅕(0)
1 2500 - ⅕(1)
2
3
4

Explanation:

Step1: Identify two points

$(2020, 2500)$ and $(2040, 2484)$

Step2: Calculate slope

Slope $m=\frac{2484 - 2500}{2040 - 2020}=\frac{-16}{20}=- 0.8$

Answer:

Thwaites melts 0.8 meters each year.
For the table:

Years Since 2020	Average Glacial Thickness in terms of Slope and y - Intercept
3	$2500 - 0.8(3)$
4	$2500-0.8(4)$