Unit 6, Lesson 5
Fitting Lines
Integrated Math 1
Practice
Problem 1
Technology required.
| \(x\) | \(y\) |
|---|---|
| 83 | 102 |
| 87 | 115 |
| 91 | 107 |
| 93 | 122 |
| 97 | 125 |
| 97 | 127 |
| 101 | 120 |
| 104 | 127 |
- Use graphing technology to create a scatter plot and find the best-fit line.
- What does the best-fit line estimate for the \(y\)-value when \(x\) is 100?
Problem 2
Technology required.
| \(x\) | \(y\) |
|---|---|
| 2.3 | 6.2 |
| 2.8 | 5.7 |
| 3.1 | 4.7 |
| 3 | 3.2 |
| 3.5 | 3 |
| 3.8 | 2.8 |
- What is the equation of the line of best fit? Round numbers to 2 decimal places.
- What does the equation estimate for \(y\) when \(x\) is 2.3? Round to 3 decimal places.
- How does the estimated value compare to the actual value from the table when \(x\) is 2.3?
- How does the estimated value compare to the actual value from the table when \(x\) is 3?