menu
Qammunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Solve the following system by any method. –8x – 8y = 0 –8x + 2y = –20 A. (2, 2) B. (0, –2) C. (–2, 2) D. (2, –2)
Ask a Question
Questions
Unanswered
Tags
Ask a Question
Solve the following system by any method. –8x – 8y = 0 –8x + 2y = –20 A. (2, 2) B. (0, –2) C. (–2, 2) D. (2, –2)
asked
May 27, 2018
222k
views
0
votes
Solve the following system by any method. –8x – 8y = 0 –8x + 2y = –20
A. (2, 2) B. (0, –2) C. (–2, 2) D. (2, –2)
Mathematics
college
Prasanna Brabourame
asked
by
Prasanna Brabourame
8.0k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
5
votes
this one is simple since we already have the two x variables.equal. All we have to do is subtract the equations from one another to get the answer.
So i will subtract the left side by the other left side and the right side by the other right side
-8x - 8y -(-8x + 2y) = 0 -(-20)
distribute negative sign
-8x - 8y + 8x - 2y = 0 + 20
do the math
- 10y = 20
Y = -2
plug t into an equation
-8x -8 (-2) = 0
-8x + 16 = 0
-8x = -16
x = 2
answer (2, -2)
Adam Siemion
answered
May 31, 2018
by
Adam Siemion
8.9k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
No related questions found
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.4m
questions
12.2m
answers
Categories
All categories
Mathematics
(3.7m)
History
(955k)
English
(903k)
Biology
(716k)
Chemistry
(440k)
Physics
(405k)
Social Studies
(564k)
Advanced Placement
(27.5k)
SAT
(19.1k)
Geography
(146k)
Health
(283k)
Arts
(107k)
Business
(468k)
Computers & Tech
(195k)
French
(33.9k)
German
(4.9k)
Spanish
(174k)
Medicine
(125k)
Law
(53.4k)
Engineering
(74.2k)
Other Questions
How do you can you solve this problem 37 + y = 87; y =
What is .725 as a fraction
How do you estimate of 4 5/8 X 1/3
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search Qammunity.org