If x varies inversely as y and x = 2 when y = 6, then the value of y when x =…
2024
If x varies inversely as y and x = 2 when y = 6, then the value of y when x = 3 is:
- A.
2
- B.
3
- C.
4
- D.
6
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Correct answer: C
When two variables x and y vary inversely, it means their product is always a constant value, k. This relationship is expressed as:
x * y = k
Step-by-Step Calculation
Find the constant (k):
We are given that x = 2 when y = 6.
k = x * y
k = 2 * 6 = 12
The constant of variation is 12.
Solve for y when x = 3:
Now that we know k = 12, we can use the same relationship to find y for the new value of x:
x * y = k
3 * y = 12
Calculate y:
y = 12 / 3
y = 4