Question

Solve, using the substitution method.

y – 2x = 8
16 + 4x = 2y

A.
The only solution is (1, 10).

B.
There is no solution.

C.
There are an infinite number of solutions.

D.
The only solution is (24, 0).

Answer 1

@Loser66

Answer 2

Okay. You need to take one of those equations and change it into either y= or x= so you can plug it in to the OTHER equation.

Answer 3

Ok

Answer 4

or, "substitute it".

Answer 5

I would suggest turning y-2x=8 into y=2x+8

Answer 6

Then, turning around and plugging it into the other equation, like so.
16+4x=2(2x+8)

Answer 7

Distribute the 2 and solve.

Answer 8

Ok

Answer 9

I got A is that correct?

Answer 10

@mikaylabean

Answer 11

Okay, not quite. Let's work through It together?

Answer 12

Ok

Answer 13

So, I left you with 4x+8=16+4x

Answer 14

First, subtract the 8 from both sides.

Answer 15

Ok

Answer 16

What are you left with?

Answer 17

4x+4=16+0x?

Answer 18

4x+4=16

Answer 19

:/ i knew that

Answer 20

Not quite. 4x=8+4x

Answer 21

Ok so then what do i do?

Answer 22

You're subtracting the 8 from the left side from both sides. Next, you need to subtract 4x from both sides, youll be left with 0=8 and thats not true, so there are no solutions

Answer 23

Ohhhhh ok could you help with a few more?

Answer 24

Sure thing.

Answer 25

YAY! so kawai

Answer 26

One moment lemme open up a new ?

Answer 27

Okay.