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

in an expression(8/9) squared (-81)+3/5dividedby-9/10
Solving systems by elimination: 2x + 4y = -4 3x + 5y = -3 Please show me your work so I can do the rest myself. Thanks!
A child is standing across the street from his apartment . His mother is on their balcony . The angle of elevation between the child's eyes and his mothers eyes
Solving systems by elimination: 2x + 4y = -4 3x + 5y = -3 Please show me your work so I can do the rest myself. Thanks!
How many minutes are in 36 hours?
.is a pot holder a conductor or a insulator
Trying to translate word problems. Five times the sum of 3 and twice some number is 70. what is the number?
When was World War I?
Trying to translate word problems. Five times the sum of 3 and twice some number is 70. what is the number?
Does the depth of a pan affect how water freezes?