Question

Quinn returned home one summer's day to find it sweat-inducingly hot! He turned the air conditioner on and fell asleep. The room's temperature decreased by 0.5^\circ0.5

∘

0, point, 5, degrees Celsius each minute, and Quinn woke up 606060 minutes later when it was 10^\circ10

∘

10, degrees Celsius.

Answer 1

Put one of the dots 2 spaces obove 60 and the other dot 3 spaces above 50.

Explanation:

Answer 2

`f(x)=-0.5x+40`

Explanation:

To solve this problem, we need to find the linear function. We know that the constant rate of change is -0.5° Celsius per minute. Also, after 60 minutes the temperature was 10° Celsius. So, we have a one point and the slope of the linear function, let's use the point-slope formula

`y-y_(1) =m(x-x_(1) )\\y-10=-0.5(x-60)\\y=-0.5x+30+10\\y=-0.5x+40`

Where the y-intercept is at (0, 40).

Now, we have two points to graph the relation between minutes and Celsius degrees.

Therefore, the room's temperature as a function of time is

`f(x)=-0.5x+40`

Its graph is attached.