1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
kherson [118]
2 years ago
5

Y=x+3 y=-x-1 i need to find the solution of equations

Mathematics
2 answers:
Molodets [167]2 years ago
5 0

Answer:

\huge\boxed{\sf \{(-2,1)\}}

Step-by-step explanation:

Given equations:

y = x + 3

y = -x - 1

By comparing the above equations, we get:

x + 3 = -x - 1

Add x to both sides

<h3>x + x + 3 = -1 </h3><h3>2x + 3 = -1</h3>

Subtract 3 to both sides

2x = -1 - 3

2x = -4

Divide 2 to both sides

x = -4/2

<h3>x = -2</h3>

Substitute x = -2 in first equation.

y = x + 3

y = -2 + 3

<h3>y = 1</h3>

So,

<h3>Solution Set = {(x,y)}={(-2,1)}</h3>

\rule[225]{225}{2}

Olegator [25]2 years ago
3 0

Answer:

x =  - 2 \\ y = 1

Step-by-step explanation:

The above are Simultaneous equations.

<h2>What are Simultaneous equations?</h2>

Simultaneous equations are two or more algebraic equations which share same variables like X,Y or X,Y and Z.

They are called simultaneous equations because they can be solved the same time.

From the question,

y = x + 3 -  -  -  -  -  - (1) \\ y =  - x - 1 -  -  -  -  - -  (2) \\ Substitute \: equation \: (2)into \: (1) \\  - x - 1 = x + 3 \\ Collect \: liketerms \\  - x - x = 3 + 1 \\  - 2x = 4 \\ Divide \: bothsides \: by \:  - 2 \\  \frac{ - 2x}{ - 2}  =  \frac{4}{ - 2}  \\ x =  - 2 \\ Substitute \: the \: value \: of \: x \: into \: equation \: (1) \\ y = x + 3 \\ y =  - 2 + 3 \\ y = 1 \\ Therefore \: x =  - 2 \:  \: and \: y = 1

You might be interested in
Please help im so confused??
Vlad1618 [11]
V = PI x r^2 x h/3

11^2 = 121
121 * 84 = 10164

 answer is 10164PI units^3

answer is B

3 0
3 years ago
Read 2 more answers
Between 2005 and 2008, the average rate of inflation was about3.4 per year. If a cart of groceries cost $140 in 2005, what did i
Elan Coil [88]
The formula is
A=p (1+r)^t
A future value?
P current value 140
R rate of inflation 0.034
T time 2008-2005=3 years
A=140×(1+0.034)^(3)
A=154.77 round your answer to get
A=155
3 0
3 years ago
D
yawa3891 [41]
Please comment on this so I can see the full question
4 0
2 years ago
Sheniah went to McDonald's and bought a soda for one dollar. She also bought a Big Mac. For any price of the Big Mac, what would
Natalka [10]

Answer:

$1+x(price of big mac)

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
I have a geometry pre course test I need help
harkovskaia [24]

Answer:

What do you need help with, comment

6 0
3 years ago
Other questions:
  • Geometric Sequence Pre-Calc<br> Please help with questions highlighted in red
    5·1 answer
  • What is the graph of the equation? x=-5
    5·1 answer
  • what is the similarity ratio of the smaller to the larger similar cylinders? enter your answer as a:b​
    5·1 answer
  • A roped-off area of width x is created around a 30- by 10-foot rectangular museum display of Native American artifacts. The comb
    9·1 answer
  • Help mee plsss &amp; thank youu
    11·2 answers
  • Polynomial add or subtract (-2x^2-4x+13)+(12x^2+2x-25)
    11·1 answer
  • Is this statement true or false high school students with a C average or above qualify for good student standing on their auto i
    14·2 answers
  • This week Kent worked 15 hours at $12.50 an hour. His paycheck, including his commission, was $263.85. Ken wants to
    10·2 answers
  • Reina enjoys dinner at a restaurant in Alhambra where the sales tax on meals is 10%. She left a 20% tip on the price of her meal
    7·1 answer
  • Vanessa purchased 2 different 3 1/2 liters bottles of soda and 4 different 2 1/4 liter bottles of juice. how many milliliters of
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!