Question

great job!
the temperature was -15 degrees celsius and rose to 5 degrees celsius. what was the change in temperature?
the temperature was 5 degrees celsius and fell to -15 degrees celsius. what was the change in temperature?
5 + y = -15
-15 + y = 5

Explanation:

Step1: Analyze First Problem

The initial temperature is -15°C, and it rose to 5°C. Let \( y \) be the change. So, starting from -15, adding \( y \) gives 5: \(-15 + y = 5\).

Step2: Analyze Second Problem

Initial temperature is 5°C, fell to -15°C. Let \( y \) be the change. Starting from 5, adding \( y \) gives -15: \(5 + y = -15\).

Step3: Match Equations to Problems

First problem (rose from -15 to 5) matches \(-15 + y = 5\). Second problem (fell from 5 to -15) matches \(5 + y = -15\).

Answer:

• For "The temperature was -15 degrees Celsius and rose to 5 degrees Celsius. What was the change in temperature?": \(-15 + y = 5\)
• For "The temperature was 5 degrees Celsius and fell to -15 degrees Celsius. What was the change in temperature?": \(5 + y = -15\)