Question

Solve, using the substitution method.



y – 2x = 8
16 + 4x = 2y









A.



The only solution is (24, 0).









B.
There is no solution.







C.
There are an infinite number of solutions.







D.



The only solution is (1, 10).

Answer 1

−2x+y=8 for y:
(Add 2x to both sides)
\[\huge~\rm~−2x+y+2x=8+2x\]
\[\huge~\rm~y=2x+8 \]
Substitute 2x+8 for y in 4x+16=2y
\[\huge~\rm~4x+16=2(2x+8) \]
solve for x

Answer 2

I got 4x+16?

Answer 3

C?

Answer 4

C is correct