If a stock price goes from $10 to $12 from January 1st to January 31, and from $12 to $9 from February 1st to February 28th, is the price change from $10 to $9 a straight line? How can I use two "pieces" of lines to describes the prices movements from the beginning of January to the end of February?

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The stock price rises from 10 to 12 from 1st January to 31st January falls from 12 to 9 from February 1 to February 28 and rises from 9 to 15 from March 1 to March 31 Since there is variation in the s... View the full answer