Loudness measured in decibels​ (dB) is defined by loudness=10log I
I0​, where I is the intensity and I0=10−12 ​W/m2.
The noise level inside a convertible driving along the freeway with its top up is 70 dB. With the top​ down, the noise level is 93 dB. Complete parts a and b below.

  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.

not sure but it may be b, as i said i'm not sure.