Question

For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?

-x + 2y = -6
3x + y = 8

-2y + 6

2y - 6

2y + 6

-2y - 6

Answer 1

2y+6

Answer 2

how'd you get that ?

Answer 3

just
-x+2y=-6
=>

Answer 4

Oh okay, thank you!

Answer 5

Can you help me with another one ?

Answer 6

yes

Answer 7

pls hurry for that.

Answer 8

A system of equations is shown below:

5x + 2y = 3 (equation 1)
2x – 3y = 1 (equation 2)

A student wants to prove that if equation 2 is kept unchanged and equation 1 is replaced with the sum of equation 1 and a multiple of equation 2, the solution to the new system of equations is the same as the solution to the original system of equations. If equation 2 is multiplied by 1, which of the following steps should the student use for the proof?

Show that the solution to the system of equations 7x – y = 4 and 2x – 3y = 1 is the same as the solution to the given system of equations

Show that the solution to the system of equations 2x + 5y = 3 and 3x – 2y = 1 is the same as the solution to the given system of equations

Show that the solution to the system of equations 9x + 4y = 5 and 7x – y = 4 is the same as the solution to the given system of equations

Show that the solution to the system of equations –4x + 9y = 5 and 2x – 3y = 1 is the same as the solution to the given system of equations

Answer 9

I'm not typing idk why it says I am.

Answer 10

just wait a minute

Answer 11

do u need any help

Answer 12

i think it is 1st one
since
as per question
on adding eq 1+eq 2
we get
7x-y=4

Answer 13

and on multiplying eq. 2 by 1 we get the same
2x-3y=1
and on solving the above one and 7x-y=4

we get same solution as that from
original equation give us solution

Answer 14

hope u get that ? thanks for asking for help .

Answer 15

hey r u there?