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
Maksim231197 [3]
3 years ago
8

Solve the following system of equations: −2x + y = 1 −4x + y = −1

Mathematics
2 answers:
Liula [17]3 years ago
6 0
Hello!

-2x + y = 1
-4x + y = -1

You can subtract these equations from each other to eliminate y

2x = 2

Divide both sides by 2

x = 1

Put this into one of the original equations

-2(1) + y = 1

Combine like terms

-2 + y = 1

Add 2 to both sides

y = 3

The answer is D) (1, 3)

Hope this helps!
Jlenok [28]3 years ago
3 0

Answer:

d. (1,3)

Step-by-step explanation:

We will use the substitution method to solve this system of linear equations with two unknowns.

First, we will have to choose any variable from some equation and clear it.

I will use the first equation, with the variable "y"

-2x+y=1\\y=1+2x

We will substitute this equation in the second equation. Every time we find the value of "y", let's replace.

-4x+y=-1\\-4x+(1+2x)=-1

We will solve this equation to find the value of "x"

-4x+1+2x=-1\\-2x=-1+1\\-2x=-2\\x=\frac{-2}{-2} \\x=1

Now, the found value of "x" will replace it in any of my two initial equations.

-2(1)+y=1\\

and we solve

-2+y=1\\y=1+2\\y=3

Thus, the result of this system of equations is

(1,3)

You might be interested in
What is cultural imperialism?
Charra [1.4K]
First of all, this would be history, not mathematics. But, the answer that I know is "The imposition of a foreign viewpoint or civilization on a <span>people."</span>
3 0
3 years ago
Read 2 more answers
I neeeeeeeeeeeeeeeeeeed help
iris [78.8K]
5.8 * 10^7

2.5* 10 ^ -3
5 0
2 years ago
How do I solve for x? <br><br>2x + 16 = -5(x + 1)
Vanyuwa [196]
P.E.M/D.A/S PEMDAS multiply subtract 2x from each side them its 16 = -7x -5 then add 5 to each side 21= -7x then divide x = -3
4 0
3 years ago
(8x^2 + 4x - 6x^2)2 + 7x^2 - 2x<br> ALgebra<br> Only nerds can solve this
andrew11 [14]

Answer:

11x2+6x

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
It's worth 4 marks and 2 OCW
LUCKY_DIMON [66]
Since these angles clearly form a circle and a circle is 360 degrees, 
120-x+2x+16+3x-72=64+4x=360. Subtracting 64 from both sides, we get 
4x=296 and by dividing both sides by 4 we get x=74
5 0
3 years ago
Other questions:
  • Write the slope-intercept form for the equation of a line parallel to y = -9 and passes through the point (12, -5)
    7·1 answer
  • Tim went shopping and spent $31.79 at each 3 stores
    9·2 answers
  • Determine which relation is a function.
    12·1 answer
  • PROBLEM 1: Looking at different combinations of letters we can decide certain facts. Decide how many different "words" can be fo
    8·1 answer
  • When a number x is multiplied by 9, the result is 3/5 . What is the value of x? Drag and drop the correct number into the box so
    8·2 answers
  • The sector enclosed by BCD in the circle below represents the
    13·1 answer
  • What is the vertex of the parabola?
    7·2 answers
  • The distance between 4 and 11 is what units
    13·2 answers
  • A gym employee is paid monthly. After working for 3 months,he had earned $4,500. To determine how much money he will make over a
    11·1 answer
  • What’s the equation to this table?Pls help.Use y=mx+b
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!