Put the values you know in the formula and solve for the constant of variation.
.. y = kx^2
.. k = y/x^2 . . . . . fill in values for y and x and compute.
200.
Explanation:
20% of 100 is 20.
Or 20/100.
We can find the equivalent fraction to get to 40 as the numerator.
To get an equivalent fraction, we must multiply both numbers by the same amount
20 x 2 is 40
—
100 x 2 is 200
40/200 = 20%
Hope this helps!
(-5,3) if I can remember how to do this right