What is the solution to the system of equations? Use the substitution method.

4x+2y=11
x-2=-2y

A. (3, -1/2)
B. (0,-2)
C. (0,-11/2)
D. (7,-5/2)

Question

What is the solution to the system of equations? Use the substitution method. 

4x+2y=11
x-2=-2y

A. (3, -1/2)
B. (0,-2)
C. (0,-11/2)
D. (7,-5/2)

igreen · Answer

First solve for 'x' in the 2nd equation, then you can substitute into the first.

Do you know how to do that? @s.gracex

welshfella · Answer

from the second eqution
x = 2y + 2
Now substutute for x in the first equation and solve for y

welshfella · Answer

oops sorry 
x = -2y + 2

welshfella · Answer

so replacing x in the first equation by -2y + 2 we have

4(-2y + 2) + 2y = 11

can you solve this?

s.gracex · Answer

Do I need to combine like terms first?

s.gracex · Answer

@welshfella I think y = 1.5 or 1/2