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
Feliz [49]
3 years ago
8

How to solve y=x-1 2x-y=0

Mathematics
2 answers:
inn [45]3 years ago
7 0
Solve the following system:
{y = x - 1 | (equation 1)
{2 x - y = 0 | (equation 2)

Express the system in standard form:
{-x + y = -1 | (equation 1)
{2 x - y = 0 | (equation 2)

Swap equation 1 with equation 2:
{2 x - y = 0 | (equation 1)
{-x + y = -1 | (equation 2)

Add 1/2 × (equation 1) to equation 2:
{2 x - y = 0 | (equation 1)
{0 x+y/2 = -1 | (equation 2)

Multiply equation 2 by 2:
{2 x - y = 0 | (equation 1)
{0 x+y = -2 | (equation 2)

Add equation 2 to equation 1:
{2 x+0 y = -2 | (equation 1)
{0 x+y = -2 | (equation 2)
Divide equation 1 by 2:
{x+0 y = -1 | (equation 1)
{0 x+y = -2 | (equation 2)
Collect results:
Answer:  {x = -1
                {y = -2
kari74 [83]3 years ago
6 0
Hello there!

y = x - 1
2x - y = 0

We need to solve y = x - 1 for y

Start by substituting x - 1 for y in 2x - y = 0

2x - y = 0

2x - (x - 1)  = 0

2x - x + 1 = 0

x + 1 = 0

x = 0 - 1

x = -1

We can use the value of x to find the value for y

Substitute -1 for x in y = x - 1

y = x - 1

y = -1 - 1
y = -2

The answers are: x = -1 and y = -2


I hope you understand the steps and if you have any questions about the answer, just let me know.

As always, I am here to help you!

You might be interested in
Help me please <br><br><br> Look at the pictures
blsea [12.9K]

Answer: C. 2

Step-by-step explanation:

Slope is calculated by y2-y1 over x2-y1. If we plug the numbers in we will get 6 over 3 as our slope which simplifies to our answer 2.

4 0
3 years ago
Read 2 more answers
Solve this system of linear equations. Separate
AleksAgata [21]
  • 7x=-63-11y-(1)
  • 8x=93+11y--(2)

Adding both

  • 15x=30
  • x=2

Putting in second one

  • 8(2)=93+11y
  • 11y=16-93
  • 11y=-77
  • y=-7
5 0
1 year ago
Read 2 more answers
Using the Quotient of Powers Property<br> Simplify 12x^9/2x^3<br> 6x^2<br> 6x^6<br> 10x^3<br> 10x^6
AysviL [449]

Answer:

It is 6x^6 ... since you divide 12÷2=6 and you subtract exponents

3 0
3 years ago
How do i solve this absolute value equation |3x-2|+4=7?
Diano4ka-milaya [45]

Answer:

{3x-2}+4=10

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
On Saturday, 94,887 passengers
garik1379 [7]
Answer: 107,997

Reasoning: All you need to do is add the two passenger numbers for the two busses to get the total number of passengers on them on Saturday.
I hope that helps
4 0
2 years ago
Other questions:
  • A parallelogram has vertices E(-8,3), F(2,-2), G(-1,3), and H(-5,-2). What are the coordinates of the midpoint of each diagonal?
    6·1 answer
  • Kylie explained that will result in a difference of squares because . Which statement best describes Kylie’s explanation?
    15·1 answer
  • Twice a number is 12 more than five times the number
    9·1 answer
  • A, B, and C are collinear. True or False?
    14·1 answer
  • After plotting the data where x=area, and f(x)=the length of one side of the square, Sam determined the appropriate model to app
    6·1 answer
  • A sub sandwich is 2.5 feet long and cut into 0.25foot pieces how many pieces are there in total?
    9·2 answers
  • Please answer before Friday, May 7
    13·2 answers
  • What is the value of x?
    14·1 answer
  • NEED HELP ASAP
    7·1 answer
  • What is the slope of the line that contains the points (-1, 2) and (3, 3)?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!