Exploring Adding and Subtracting Rational Expressions

Which graphing calculators are mentioned as suitable for calculating linear regression lines?

• TI-83 and TI-84

• Casio fx-9750GII

• HP Prime

• None of the above

What is the first step in entering data into the graphing calculator for linear regression analysis?

• Selecting the 'Stat Plot' feature

• Choosing the 'Edit' option under the 'Stat' menu

• Graphing the data points

• Calculating the line of best fit

How do you delete an extra data value entered by mistake in the graphing calculator?

• Restart the calculator

• Highlight the value and press 'Delete'

• It cannot be deleted

• Use the 'Clear' button

What is the purpose of adjusting the 'Window' settings on the graphing calculator?

• To save the entered data

• To calculate the line of best fit

• To set the viewing range for graphing data points

• To clear previous data

Which menu option allows you to calculate the line of best fit on a TI-84 calculator?

• 'Stat Plot'

• 'Calc'

• 'Edit'

• 'Window'

What does the 'A' value represent in the linear regression equation y = Ax + B?

• Slope

• X-intercept

• Correlation coefficient

• Y-intercept

How do you estimate a value using the line of best fit equation on the graphing calculator?

• By inputting the equation into the 'Y=' menu

• By using the 'Stat Plot' feature

• By graphing the equation

• By plugging in the x-value into the equation

In the context of years as data points, how are years typically represented in linear regression analysis?

• As actual years (e.g., 1980, 1990)

• As increments from a base year (e.g., Year 0, Year 1)

• As months

• Years are not used in linear regression

What is the estimated year in which annual tuition will reach $10,000 according to the linear regression model?

• 2020

• 2030

• 2027

• 2025

What is the correct way to input a future value into a linear regression equation to make an estimation?

• By using the future value as the y-value

• By using the future value as the x-value

• By recalculating the line of best fit

• By graphing the future value