Answer:
[tex]-46[/tex] meters per year.
Step-by-step explanation:
We have been given that a glacier advanced down a mountain from an elevation of 2010 m to 1780 m in 5 years.
[tex]\text{Rate of change}=\frac{y_2-y_1}{x_2-x_1}[/tex]
[tex]\text{Rate of change}=\frac{1780-2010}{5-0}[/tex]
[tex]\text{Rate of change}=\frac{-230}{5}[/tex]
[tex]\text{Rate of change}=-46[/tex]
Since the glacier is melting down, therefore, the glacier's rate of change would be [tex]-46[/tex] meters per year.
