Sid painted 10 portraits every 30 hours at the rate how long will it take to paint three portraits

9 hours

Step-by-step explanation:

10 portraits in 30 hours, let's write it mathematically

10p=30h   then 1p=(30/10)h= 3 h  three hours for a single portrait

therefore for 3 portraits he will take three times 3 hours

3p=3*3h = 9 hours

  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.