Does anyone know the answer to this please help
2 answers:
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Answer:
Third option,
Step-by-step explanation:
By observation, we can infer that
.
Subtract 8 from both sides:
Subtract 4x from both sides:
Divide both sides by -1:
The answer is the first option: I, II and III.
The explanation is shown below:
1. By definition, there is a joint variation when a variable depends on two or more different variables. Therefore, you can express it as following:
Where and
are the variables and
is the constant of proportionality.
As you can see, is directly proportional to
and
.
2. Keeping the information above, you have:
I) (
varies jointly with
,
and
.
II) (If
is the constant of proportionality,
varies jointly with
and
).
III) (
varies jointly with
and
.