Final answer:
If Krystina's calculation for slope is incorrect, there could be several reasons for it. These include incorrect use of the slope formula, mistakes in arithmetic, and choosing the wrong points. Without more information, it is difficult to provide a more accurate explanation.
Step-by-step explanation:
The question does not provide specific information about Krystina's calculation for slope, so it is difficult to determine if it is correct or not. However, if her calculation is incorrect, there could be several reasons:
- Incorrect use of the slope formula: The slope formula is (y₂ - y₁) / (x₂ - x₁), where (x₁, y₁) and (x₂, y₂) are two points on the line. If Krystina did not use this formula correctly, her calculation could be incorrect.
- Mistakes in arithmetic: Simple arithmetic errors can lead to incorrect slope calculations. It's important to double-check the calculations to ensure accuracy.
- Choosing the wrong points: If Krystina chose incorrect points to calculate the slope, her calculation would be incorrect. It's important to choose two distinct and representative points on the line.
Without more information about Krystina's specific calculation, it is difficult to provide a more accurate explanation for why she might be incorrect.