Question

PRICES The Consumer Price Index (CPT) gives the relative price for a fixed set of goods and services. The CPI from
September, 2000 to July, 2001 is shown in the graph. Describe the turning points of the graph.
Source: U S Bureau of Labor Statistics
Consumer Price Index

Answer 1

Using function concepts, it is found that the turning points of the graph are:

• November 2000, when it goes from increasing to decreasing.

• December 2000, when it goes from decreasing to increasing.
• June 2001, when it goes from increasing to decreasing.

In a graph:

• A function is increasing if it is pointing upwards.
• If it is pointing downwards, it is decreasing.

• A turning point is when the function changes from decreasing to increasing or vice-versa.

In this problem:

• Initially, the function is increasing.
• In month 3, that is, November 2000, it starts to decrease, thus, in November 2000, we have a turning point.
• The next month, that is, December 2000, it starts to increase again, so it is another turning point.
• It increases until month 9, which is June 2001, when it starts to decrease, being the final turning point.

A similar problem is given at https://brainly.com/question/13539822