Question

To conduct an experiment, the room temperature

in a lab needs to be as close as possible to -2
degrees Celsius. Any variation from this target
temperature, whether warmer or cooler, is
considered an error that could affect the
experiment.
Function v gives the absolute temperature error
as a function of the room temperature in degrees
Celsius, x.
Select all statements that are true about the
function and the situation.
A. When the room temperature is 0 degrees
Celsius, v(0) has a value of 2.
B. When the room temperature is -3 degrees
Celsius, the absolute temperature error, v(-3),
is -1.
C. When the room temperature is 3 degrees
Celsius, v(3) is 5.
D. The equation v(x)= |x - 2| gives us the absolute
temperature error when the room temperature is
x degrees Celsius.
E. When v(x) = 0.5, the room temperature could be
-1.5 or -2.5 degrees Celsius.
F. The equation v(x) = |x + 2| gives us the absolute
temperature error when the room temperature
is x degrees Celsius.

Answer 1

a,c,e,f

Explanation:

A: Yes.when room temperature is 0, that's 2 degrees away from -2

B: No. -3 is 1 degree away from -2

C: Yes. 3 is 5 degrees away from -2

D: No. Test this by |3-2| to get 1. We already said when the input is 3, the output is 5, not 1.

E: Yes. Subtract or add 0.5 to -2 to get -1.5 or -2.5.

F: Yes. Test with both a negative and positive number, say -5 and pos 7 because why not, both give valid outputs.