Solve each system of equations using substitution. #4 is done for you.

4) y = x + 8

x + y = 2

y = 5 and x = - 3

Step-by-step explanation:

Given,

y = x + 8 ... (equation 1)

x + y = 2 ... (equation 2)

Now, by substituting the value of y in equation 2, we get;

⇒ x + x + 8 = 2

⇒ x = - 3

and now, by substituting the value of x in equation 1, we get;

⇒ y = - 3 + 8

⇒ y = 5