MrDogD MrDogD
  • 01-12-2020
  • Mathematics
contestada

Solve the system of linear equations by substitution.
1/2x +y=-4
y = 2x + 16

Respuesta :

cliffkendLl
cliffkendLl cliffkendLl
  • 01-12-2020
sub 2x+16 for y into the 1st line so
1/2x+2x+16=-4 now find x
which is x=8 not plug in -8 for x, does not matter which one
you will get y=0
answer•
x=-8
y=0
(-8,0)
Answer Link
vialia
vialia vialia
  • 01-12-2020

Answer:

y = 0

x = -8

Step-by-step explanation:

1/2x + y = - 4

y = 2x + 16

1/2x + (2x + 16) = - 4

1/2x + 2x = - 4 - 16

5/2x = -20

2/5 x 5/2x = -20 x 2/5

x = -40/5

x = -8

y = 2x + 16

y = 2(-8) + 16

y = -16 + 16

y = 0

Check:

1/2x + y = - 4

y = 2x + 16

1/2(-8) + (0) = -4

-4 + 0 = -4

-4 = -4

y = 2x + 16

(0) = 2(-8) + 16

0 = -16 + 16

0 = 0

Answer Link

Otras preguntas

The beginning of the Anglo-Saxon period roughly corresponds with which historical event?
Communism and socialism are usually found in what type of economic system?
List two general properties of molecular compounds
What are character traits that people work toward, in order to become better human beings?
During the Age of Exploration, the vast majority of enslaved laborers were transported between which two locations
Which topic would most likely have been the focus of a poem during the Romantic period?
Which person is best associated with education reform in the U.S.? Richard Allen Dorothea Dix Horace Mann Joseph Smith
Stan walks two kilometers day. How many meters does he walk in two days?
is every equilateral triangle cute
PLEASE GIVE CORRECT ANSWER THANK YOU !!!!!! : ) 1.) 2x+8+4x-5 2.) b +72y-4.2y+1 3.) 10r-5+3+r 4.) 3x+14 -x -15 5.) -6.6z+11+1.3+ +2z