y=21 when x=18.
When x=6, y=7.
To get from 6 to 18 (for x), you must multiply by 3.
To get from 7 to __ (for y), you must do the same as done to x.
The formula for Direct Variation is y=kx or k=y/x. In this case I would use k=y/x. If you're y is 8 and x is 3, this means that K=8/3. Using this, we know that X=15. We have to find a Y value so that the fraction with an x of 15 simplified is 8/3. To do this you would write 8/3 and y/15. Now cross multiply to get 3y=120. Divide by 3 to get y=40. View my attachment for the work!
The constant of variation is the constant in the equation: 8.
The equation can be rewritten to be
y = 8/x
Compared to the generic equation for inverse variation, ...
y = k/x
we see that the constant of variation (k) is the constant in the given equation, 8.
y=24 when x=3 because you * 3*3=9 so you do 8*3=24 which you your answer
becuese it is = 16 just multiply it
Constant of variation for given inverse proportion is 8
In inverse variation if one quantity increases the other decreases and vice versa.
if x is inversely proportional to y,
x ∝ 1/y
x = k/y
Here k is the constant of variation.
Given equation is
xy = 8
x = 8/y
Comparing with general equation, we get k = 8
Keywords: Proportion, variation
Learn more about variation at:
k=37.5 ; xy=37.5
the correct answer is 828.07