Question

x - y = 6
x = y + 2
Solve the system of equations by substitution.


Answers:
(4, -2)

(6, 0)

no solution

coincident

got confused on this -_- math is not my thing right now.

Answer 1

\(\large\color{slate}{ x - y = 6 }\)
\(\large\color{slate}{ x = \color{red}{ y + 2} }\)

substitution into the first equation.
\(\large\color{slate}{ (\color{red}{ y + 2}) - y = 6 }\)

Answer 2

i did that and i got y - y = 8

Answer 3

y-y=0, you know that, right?

Answer 4

well excuse me Dx i am really bad with math

Answer 5

but, you know that \(\large\color{slate}{ y-y=0 }\) .

(just like,
\(\large\color{slate}{ 1-1=0 }\)
\(\large\color{slate}{ 4-4=0 }\)
\(\large\color{slate}{ 72-72=0 }\)
and etc.,) correct?

Answer 6

yes... sorry i just get confused with algebra :\

Answer 7

sure, no need to apologize.

you have: \(\large\color{slate}{ y+2-y= 8 }\) right after the substitution.

the y's cancel: \(\large\color{slate}{ 2= 8 }\)

Answer 8

that means that there are no solutions.

Answer 9

questions?

Answer 10

oh ok thanks i was busting my head with that -_- ugh math

Answer 11

but thank you so much

Answer 12

yw

Answer 13

so would this also be no solutions? i am just checking this one before i redo my assignment

10x - 10y = 1
x = y - 3