SAT Math: Recognizing Differences in the Slope of a Line

A toy company manufactures toy cars for children. The graph above shows the annual sales of those toy cars. During these five years, when did the yearly sales rate begin to decline?

Problem Solving and Data AnalysisTwo-way table data
Product TypeSAT Math
SATSAT Math
SAT MathProblem Solving and Data Analysis
Statistics and Probability
Test PrepSAT Math