The following graph illustrates how the price of a stock...

The following graph illustrates how the price of a stock fluctuated from the closing price on Monday through the closing price on Friday during a particular week. The horizontal axis represents the days and the vertical axis represents the price of the stock in dollars. FIGURE CAN'T COPY. (a) On what day did the stock hit its lowest price? What was this lowest price? (b) On what day did the price of the stock both rise and fall? (c) On what day did the price of the stock change the most? By how much? (d) How much did the price change from its closing price on Tuesday to its closing price on Friday?

The following graph illustrates how the price of a stock fluctuated from the closing price on Monday through the closing price on Friday during a particular week. The horizontal axis represents the days and the vertical axis represents the price of the stock in dollars.
FIGURE CAN'T COPY.
(a) On what day did the stock hit its lowest price? What was this lowest price?
(b) On what day did the price of the stock both rise and fall?
(c) On what day did the price of the stock change the most? By how much?
(d) How much did the price change from its closing price on Tuesday to its closing price on Friday?

Key Concepts

Line Graph Interpretation

This concept refers to understanding and analyzing line graphs where one axis typically represents time (e.g., days of the week) and the other axis represents a measured variable (e.g., stock price). It involves reading the data points, understanding trends, and correlating the information provided by both axes to gain insights into changes over time.

Extrema Identification

This concept involves locating the highest or lowest points in a dataset. In graphs, this means identifying the maximum or minimum values reached during a time period. For stock prices, it includes determining the day when the price hit its lowest or highest point, which is essential for understanding overall performance.

Turning Points Analysis

This involves recognizing points in a graph where the trend reverses direction. In the context of stock prices, it is used to find the day when the price first goes up and then down (or vice versa), indicating potential moments of volatility in the market and significant shifts in investor behavior.

Change Magnitude Calculation

This concept is about calculating the differences between data points to quantify how much a value has changed over a specific period. It includes comparing consecutive days or measuring net changes over longer intervals, helping to identify the day with the largest change and assess overall variations in stock price.

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