Instructions: Determine whether graphs of each of the exponential functions would show vertical stretch or vertical compression and whether there is reflection over the x𝑥-axis.y=−2(3)x𝑦=−2(3)𝑥Vertical Answer 1 Question 14Reflection over the x𝑥-axis? Answer 2 Question 14
Question
Instructions: Determine whether graphs of each of the exponential functions would show vertical stretch or vertical compression and whether there is reflection over the x𝑥-axis.y=−2(3)x𝑦=−2(3)𝑥Vertical Answer 1 Question 14Reflection over the x𝑥-axis? Answer 2 Question 14
Solution
The function given is y = -2(3)^x.
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Vertical Stretch or Compression: The coefficient of the function is -2. In an exponential function, if the absolute value of the coefficient is greater than 1, it indicates a vertical stretch. If it's less than 1, it indicates a vertical compression. Here, the absolute value of -2 is 2, which is greater than 1. Therefore, the graph of the function shows a vertical stretch.
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Reflection over the x-axis: The negative sign in front of the 2 indicates that there is a reflection over the x-axis. So, yes, the graph of the function is reflected over the x-axis.
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