Vincent is calculating values for a direct variation which has a constant of variation of k=13. Which pair of values in the table below did Vincent calculate incorrectly?

x 3 6 9 12
y 1 2 6 4

Step-by-step explanation:

It seem the constant of variation is k = 1/3.

The equation is:

Let's verify the values in the table:

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.