Question

start by looking at these two scenarios. match the scenarios to the equations.
the temperature was -9 degrees celsius and rose to 3 degrees celsius. what was the change in temperature?
the temperature was 3 degrees celsius and fell to -9 degrees celsius. what was the change in temperature?
3 + x = -9
-9 + x = 3

Explanation:

Step1: Define change in temperature

Let $x$ = change in temperature. Initial temp + $x$ = final temp.

Step2: Match first scenario

First scenario: Initial=-9, final=3. Equation: $-9 + x = 3$.

Step3: Match second scenario

Second scenario: Initial=3, final=-9. Equation: $3 + x = -9$.

Answer:

First scenario (temperature rose from -9 to 3) matches $-9 + x = 3$; Second scenario (temperature fell from 3 to -9) matches $3 + x = -9$.