Grade 8
CCSS Math Standard: 8.F.5
Use functions to model relationships between quantities. Describe qualitatively the functional relationship between two quantities by analyzing a graph (e.g., where the function is increasing or decreasing, linear or nonlinear). Sketch a graph that exhibits the qualitative features of a function that has been described verbally.
How have the ages of three countries' populations changed from 1950 to 2020? And what problems might that create?