Question

The graph shows the temperature of a room, in degrees Fahrenheit, over time, t, in minutes.



For which values of t (time) is the temperature increasing?



Choose all answers that are correct.













A.

from t = 0 to t = 20








B.

from t = 20 to t = 40








C.

from t = 40 to t = 50








D.

from t = 50 to t = 70








E.

from t = 70 to t = 80

Answer 1

When is the graph slope positive? In other words, when is the ramp going UP?

Answer 2

For example, From t=0 to t=20 minutes, the temperature goes from 65 to 75 degrees.

Temp was increasing over t=0 to t=20 minutes

Answer 3

It stays the same (Horizontal line) constant temp for the next 20 min. from t=20 min to t=40 min the temp stays at 75 deg....

Answer 4

There is one more interval of time besides 0 to 20 min, where the temp is going up...

Answer 5

I GET IT DanJS

Answer 6

Awesome, what is the final answer?

Answer 7

I THINK IS A AND D

Answer 8

@DanJS

Answer 9

k

Answer 10

that is right

Answer 11

When does the temperature stay the same? = horizontal line
When does the temperature decrease? = Sloped down