Question 5.5. Use the substitution method to solve the following system of linear equations:

x + y = 6
x = –y + 2

(Points : 4)
The solution is (2, 4).
The solution is (4, 2).
There is no solution.
There are an infinite number of solutions.

Question

Question 5.5. Use the substitution method to solve the following system of linear equations:

x + y = 6
x = –y + 2

(Points : 4)
       The solution is (2, 4).
       The solution is (4, 2).
       There is no solution.
       There are an infinite number of solutions.

texaschic101 · Answer

x = -y + 2
so sub in -y + 2 in for x in the 1st equation

x + y = 6
(-y + 2) + y = 6 -- combine like terms
2 = 6 (incorrect) -- no solution