Question

Which equation shows the substitution method being used to solve the system of linear equations?
x + y = 6
x = y + 2


A. x + y = y + 2

B. (y + 2) + y = 6

C. x = (x – 6) + 2

D. x + (y + 2) = 6

Answer 1

I believe it is D

Answer 2

@fallenangelorchid sorry but I have a lot of questions guys @pythonwizard @Alchemista @DJ3strella @AlexandervonHumboldt2 @hotdancingbabe14

Answer 3

@perl

Answer 4

its not d its b. you have it confused

Answer 5

your substituting y+2 for x in the first eqquation

Answer 6

Look at the system. Notice the system literally gives you what x is
just like when you solve an equation and you get x=
You have x=y-2
So plug x into the other equation
y+2+y=6 or (y+2)+y=6

Answer 7

sowy if I do xD

Answer 8

SO its B

Answer 9

I thought it was c at first how is it b @pythonwizard

Answer 10

Yup it is B

Answer 11

Karon explains it perfectly

Answer 12

in these types of problems, solve for the easiest vaiable. and then plug-and-chug into the other equation. and tada, you have the answer

Answer 13

LOL thank you

Answer 14

look at karon's reply for clarification. :-)

Answer 15

is anyone here taking pre-calc at the moment?

Answer 16

@thesmartone

Answer 17

Sorry just Algebra 2 honors

Answer 18

The system of equations is coincident. What are the missing values?
3x + y = 7
9x + _ y = _

Answer 19

3 in the y and 21 after teh =

Answer 20

yup

Answer 21

if you noticed, the bottom is just the same as the top exept everything is multiplied by 3

Answer 22

so its 9x + 3y = 21 ?

Answer 23

brb

Answer 24

correct.

Answer 25

yay thanks for the tip :)

Answer 26

my pleasure

Answer 27

A collection of quarters and nickels is worth $14.80. There are 88 coins in all. How many of each coin are there?

_ dimes
_ nickles

Answer 28

ok

Answer 29

one sec

Answer 30

x is the number of dimes, nickel