Question

fwam is preheating his oven before using it to bake. fwam wants to predict the final temperature after $x$ minutes. he wrote the equation $y = 40x + 79$, where $y$ represents the final temperature in degrees fahrenheit. what is the meaning of the $y$-value when $x = 1?
answer
the change in minutes for every change of one degree fahrenheit.
the time when the ovens temperature is $0^{circ}$.
the rate of change in the ovens temperature over time.
the ovens temperature after 1 minute.

Explanation:

The equation $y = 40x+79$ models the oven's temperature $y$ (in degrees Fahrenheit) after $x$ minutes. When $x = 1$, we substitute $x = 1$ into the equation to find the temperature at the 1 - minute mark. So the $y$-value represents the oven's temperature after 1 minute.

Answer:

The oven's temperature after 1 minute.