Question
Describe a function \( g(x) \) in terms of \( f(x) \) if the graph of \( g \) is obtained by vertically stretching \( f \) by a factor of 9 , then shifting the graph of \( f \) to the right 5 units and upward 7 units. \( g(x)=A f(x+B)+C \), where \( A=\square \) \( B=\square \) \( C=\square \)
Ask by Warren Sandoval. in the United States
Mar 01,2025
Upstudy AI Solution
Tutor-Verified Answer
Answer
\( A = 9 \), \( B = -5 \), \( C = 7 \).
Solution
The function g(x) is created by taking f(x) and performing three transformations:
1. Vertically stretch f(x) by a factor of 9. This multiplies the output of f(x) by 9.
2. Shift f(x) to the right by 5 units. A horizontal shift to the right is accomplished by replacing x with (x – 5).
3. Shift f(x) upward by 7 units. Adding 7 to the function moves the graph upward.
Thus, combining these transformations, the function g(x) can be written as:
g(x) = 9 f(x – 5) + 7
In the given form g(x) = A f(x + B) + C:
A = 9,
B = –5,
C = 7.
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Extra Insights
To transform the function \( f(x) \) into \( g(x) \), we apply the specified changes step by step. First, we vertically stretch \( f(x) \) by a factor of 9, giving us \( 9f(x) \). Next, we shift the graph of \( f(x) \) to the right by 5 units. This results in \( 9f(x-5) \). Finally, we shift the graph upward by 7 units, leading to the final expression \( g(x) = 9f(x-5) + 7 \). Thus, we identify: \( A = 9 \) \( B = -5 \) (since we shift to the right) \( C = 7 \) So, the complete equation is \( g(x) = 9f(x - 5) + 7 \).