Well first you would subtract 9 from both sides to isolate your variable
so it would look like
1/4y =-81/2
now you divide 1/4 from both sides
so you're left with
y = -34
X=3 because you have to isolate the variable by dividing each side by factors that don’t contain the variable .
This might be the answer hope it helps
The mean of the data set 1 is 3.6 because if you add all the numbers up you’ll get 32/9 = 3.555555556 or 3.6
The mean of the data set 2 is 9.3 because if you add all the numbers up, you’ll get 93/10=9.3
