Answer:
<h2>D) y = 2x – 8</h2>
Step-by-step explanation:
In this problem, the initial condition is -8, because the start of the day, the morning, was -8 °F. This characteristic is really important, initial condition are expressed as y-interception, which is the constant term of a linear function.
So, in this case, the viable answers are B or D, it depends on the ratio of change.
The problem states that as the day went on, the temperature ROSE 2 degrees each hour, that expressed an increasing behaviour of 2. Mathematically, that means the independent variable must be negative.
Therefore, the right answer is D., because it has a positive rate of change, and it has -8 as y-interception or initial condition.
