What does the consumer price index measure ?

The CPI is defined as a statistical estimate of the value of something many years ago as compared to the current time.

Like if you purchased something in 1990 for $10, so what is the value of that thing in current time. Its the comparison of basically currency. That time, the value of $10 was very high as compared to today's time.

So, this is the difference that is measured by CPI.

This is based on inflation and this is the reason, there is a gradual change in living standard.

  y= -3x is the required function.

step-by-step explanation:

we have been given a table:

x             y

0             0

1             -3

3             -9

-2             6

we can see that the values of y is -3 times the value of x

hence, the function would be: y= -3x.

put the values of x will give the same y as in the table that means function is satisfying the given table.

5 pm

step-by-step explanation: