Question

Khloe is preheating her oven before using it to bake. Khloe wants to predict the final temperature after x

�
x minutes. She wrote the equation y, equals, 20, x, plus, 78
�
=
20
�
+
78
y=20x+78, where y
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y represents the final temperature in degrees Fahrenheit. What is the meaning of the y
�
y-value when x, equals, 1
�
=
1
x=1?

Answer 1

In the equation y=20x+78y=20x+78, where y represents the final temperature in degrees Fahrenheit and x represents the number of minutes the oven has been preheating, you can find the meaning of the yy-value when x=1x=1by simply plugging in x=1x=1into the equation:y=20(1)+78y=20(1)+78Now, calculate the value of yy:y=20+78y=20+78y=98y=98So, when x=1x=1, the yy-value (final temperature) is 98 degrees Fahrenheit. This means that after preheating the oven for 1 minute, the final temperature inside the oven is 98 degrees Fahrenheit.