Solve, using the substitution method.

y + 2x = 7
14 – 4x = 2y

A.
The solution is (1, 5)

B.
The solution is (21, 0)

C.
There are an infinite number of solutions.

D.
There is no solution.

Question

Solve, using the substitution method.

y + 2x = 7
14 – 4x = 2y
 
 A.
The solution is (1, 5)
 
 B.
The solution is (21, 0)
 
 C.
There are an infinite number of solutions.
 
 D.
There is no solution.

anonymous · Answer

i am thinking a or c, more leaning to c though plz help I WILL GIVE MEDAL AND FAN!

anonymous · Answer

y + 2x = 7
14 – 4x = 2y

Simplify:
2y = 14 - 4x
y = 7 - 2x

Substitute:
y + 2x = 7
(7 - 2x) + 2x = 7
7 = 7

As this shows any value of x and y are irrelevant... 
C.
There are an infinite number of solutions.

anonymous · Answer

omg thank you so much! mind helping me with more?
i will tag u

anonymous · Answer

sure :)