Does anyone know this???

Step-by-step explanation:

a)

median= 25

interquartile range= 19

b)

On average The Braineys was the slowest at completing the test because they have a median time of 32 minutes whereas The Cleverites have a median time of 25 minutes.

  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.