spiritnevland spiritnevland
  • 03-01-2021
  • Mathematics
contestada

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

A: (3, 1)
B: (-1, 3)
C: (-1, -3)
D: (1, 3)

Respuesta :

Eddie1Wan
Eddie1Wan Eddie1Wan
  • 03-01-2021

Answer:

x=1,y=3

correct answer is (1,3)

Step-by-step explanation:

We can quickly eliminate y by subtracting one equation from the other

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

2x=2

x=1

plug x=1 into equation 1

-2(1)+y=1

y=1+2=3

Answer Link

Otras preguntas

Peacock mantis shrimps (Odontodactylus scyllarus) feed largely on snails. They shatter the shells of their prey by delivering a sharp blow with their front legs
A short detective story in 200 or 300 words​
which substance is used for structure in plants? A. Amylopectin B. Cellulose C. Collagen D. Starch
Which part of an object's rate of change best defines acceleration? velocity force speed position
147 divided by 7 with work
Which statement best describes the polarity of CH2Cl2? View Available Hint(s) Which statement best describes the polarity of ? The molecule is always polar. The
what state of matter typically has the highest density
When your purchases are swiped over the bar-code reader at the point-of-sale terminals at Wal-Mart, a _____ records the data.
According to the article ‘BEHAVIORIST THEORY ON LANGUAGE LEARNING AND ACQUISITION’, which one (1) of these ideas is central to the understanding and application
The __________________ Penitentiary was founded in New York in 1816 as an experiment of a new model for reforming criminals.