Based on the graph, the relationship between the age of a human and the age of a dog is given by the point (3, 21), indicating that when a human is 3 years old, the dog is 21 years old.
Therefore, a 3-year-old human is the same as a 21-year-old dog.
Use the image to answer the question.
A graph shows the x-axis representing age of human in years ranging from 0 to 8 in increments of 1, and the y-axis representing age of dog in years ranging from 0 to 24 in increments of 3. A line is drawn. The line begins at the origin and passes through left parenthesis 3 comma 21 right parenthesis.
The age of a dog is proportional to the age of a human. Based on the graph, determine a dog’s age if a human is 3 years old.
(1 point)
A 3-year-old human is the same as a ___-year-old dog.
1 answer