Question

charlotte is preheating her oven before using it to bake. charlotte wants to predict the final temperature after x minutes. she wrote the equation y = 78 + 20x, 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 ovens temperature after 1 minute.
the change in degrees fahrenheit for every change of one minute.
the time when the ovens temperature is 0°.

Explanation:

Step1: Analyze the variables

In the equation $y = 78+20x$, $x$ represents the number of minutes and $y$ represents the final temperature in degrees Fahrenheit.

Step2: Substitute the value of x

When $x = 1$, we substitute it into the equation to find the corresponding $y$-value. This $y$-value gives the temperature at $x = 1$ minute.

Answer:

The oven's temperature after 1 minute.