In 1991, there were 41,628 shopping centers in a certain country. In 2001, there were 48,434. (a) Write an equation expressing the number y of shopping centers in terms of the number x of years after 1991. (b) When will the number of shopping centers reach 60,000? (a) The equation is y=x+ (Type integers or decimals.) (b) The number of shopping centers will reach 60,000 in the year (Round down to the nearest year.)

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Chapter4: Linear Functions
Section4.3: Fitting Linear Models To Data
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### Analysis of Shopping Centers Growth Over Time

In 1991, there were 41,628 shopping centers in a certain country. In 2001, there were 48,434.

**(a) Writing an Equation**  
To express the number \( y \) of shopping centers in terms of the number \( x \) of years after 1991, we can use a linear equation.

\[ \text{The equation is } y = \] [ ][ ] \( x \) + [ ]

\[ \text{Type integers or decimals.} \]

**(b) Predicting Future Numbers**  
To determine when the number of shopping centers will reach 60,000:

\[ \text{The number of shopping centers will reach 60,000 in the year } \] [ ][ ]

\[ \text{Round down to the nearest year.} \]

### Explanation of the Instructions

1. **Step (a) - Writing the Equation**:
   - You will need to calculate the slope (rate of change) of the number of shopping centers per year between 1991 and 2001.
   - Then, use the point-slope form to develop the linear equation that models this growth.

2. **Step (b) - When Number Will Reach 60,000**:
   - Using the equation from step (a), solve for \( x \) when \( y = 60,000 \).
   - Round down the resulting year to the nearest whole number.

This activity involves understanding linear relationships, specifically how to create and use a linear equation to project future values based on historical data.

### Visual Aids and Graphs (If Applicable)
- **Graph**: Display the number of shopping centers on the y-axis and the years on the x-axis, marking points for the year 1991 and 2001. 
- **Slope Calculation**: Use a table to show the calculation of the increase in shopping centers per year.

Feel free to transpose these instructions and inputs onto your educational platform for a comprehensive learning module.
Transcribed Image Text:### Analysis of Shopping Centers Growth Over Time In 1991, there were 41,628 shopping centers in a certain country. In 2001, there were 48,434. **(a) Writing an Equation** To express the number \( y \) of shopping centers in terms of the number \( x \) of years after 1991, we can use a linear equation. \[ \text{The equation is } y = \] [ ][ ] \( x \) + [ ] \[ \text{Type integers or decimals.} \] **(b) Predicting Future Numbers** To determine when the number of shopping centers will reach 60,000: \[ \text{The number of shopping centers will reach 60,000 in the year } \] [ ][ ] \[ \text{Round down to the nearest year.} \] ### Explanation of the Instructions 1. **Step (a) - Writing the Equation**: - You will need to calculate the slope (rate of change) of the number of shopping centers per year between 1991 and 2001. - Then, use the point-slope form to develop the linear equation that models this growth. 2. **Step (b) - When Number Will Reach 60,000**: - Using the equation from step (a), solve for \( x \) when \( y = 60,000 \). - Round down the resulting year to the nearest whole number. This activity involves understanding linear relationships, specifically how to create and use a linear equation to project future values based on historical data. ### Visual Aids and Graphs (If Applicable) - **Graph**: Display the number of shopping centers on the y-axis and the years on the x-axis, marking points for the year 1991 and 2001. - **Slope Calculation**: Use a table to show the calculation of the increase in shopping centers per year. Feel free to transpose these instructions and inputs onto your educational platform for a comprehensive learning module.
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