Question

In the system of x+2y=9 and x-y=6. What would be substituted for x in the second equation?

A.9-x

B.1/2x+9

C.9-2y

D.y-9/2

I got D. Am I right?

Answer 1

guess what i'm gonna say!!

Answer 2

I got y=-1/2x+9/2

Answer 3

what are you going to say?

Answer 4

What are you gonna say?

Answer 5

Wait so Your saying it's 'B'?

Answer 6

nope its C

Answer 7

Can you explain that please.

Answer 8

sorry about that i was trying to find out what why was equal to.

Answer 9

so all you have to do is change the equation x+2y=9 to what x=. subtract 2y to the other side

Answer 10

x+2y=9
-2y -2y

x = 9 - 2y
------------
x - y = 6

(9-2y) - y = 6

Answer 11

you get -2y+9 which is the same as 9-2y

Answer 12

ooh..

Answer 13

therefore the answer is C

Answer 14

Thank you.

Answer 15

ur welcome

Answer 16

hint:
Step 1) type the two equations in wolfram alpha separated by a comma
Step 2) ???
Step 3) Sing!
Step 4) ANSWER!!!

Answer 17

Hahaha

Answer 18

thats stupid

Answer 19

you'll thank me by the time you get to Calculus 3! XD

Answer 20

ok ok , so can you explain this one too.
Solve this system

-5x+y=-3

3x-8y=24


(0,-3)


(3,0)


(0,3)


(-3,0)

Answer 21

use the hint I gave you!

Answer 22

How will that help me?