SOLUTION: Explain why the line y = -2 is a horizontal line.

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Question 278990: Explain why the line y = -2 is a horizontal line.
Answer by solver91311(24713) About Me  (Show Source):
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The equation has a solution set that consist of every possible ordered pair where the -coordinate is -2. Since the value of the function is a fixed number, there is no variation in the vertical direction, either up or down -- hence it is horizontal.

John