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 ?

A. The change in minutes for every change of one degree Fahrenheit.
B. The time when the oven's temperature is 0°.
C. The rate of change in the oven's temperature over time.
D. The oven's temperature after 1 minute.

Answer 1

The value of y when x=1 represents the oven's temperature in degrees Fahrenheit after 1 minute of preheating, which is 119°F. Option D

Step-by-step explanation:

The equation provided, y=40x+79, is meant to predict the final temperature of the oven in degrees Fahrenheit after x minutes of preheating. When x equals 1, the equation becomes y=40(1)+79, which simplifies to y=119.

This means that the value of y when x=1 is the oven's temperature in degrees Fahrenheit after 1 minute of preheating. Therefore, the correct answer is D. The oven's temperature after 1 minute.