Do only the highlighted please!!

step-by-step explanation:

step 1: solve one of the equations for one of the variables. let's solve the first equation for y:

step 2: substitute that equation into the other equation, and solve for x.

step 3: substitute x = 4 x = 4 x=4 into one of the original equations, and solve for y.

1) 2/5

2) zero=0/1

3) zero=0/2

4) -4/5

5) undefined=3/0

7 is the median   7.875 is the mean

step-by-step explanation:

3,4,5,6,8,11,13,13