smichelle26 smichelle26
  • 04-02-2020
  • Mathematics
contestada

Please solve the following system of equations by
substitution.
y = 3x - 4 and 4x + 3y = 1

Respuesta :

profarouk profarouk
  • 04-02-2020

Answer:

(1 , -1)

Step-by-step explanation:

y = 3x - 4  (1)

4x + 3y = 1 (2)

if we substitute y by 3x - 4 in the second equation we get

4x + 3(3x-4) = 1 ⇒ 4x + 9x - 12 = 1 ⇒ 13x = 13 ⇒ x = 1

now ,we substitute x by 1 in the first equation

y = 3(1) - 4 = 3 - 4 = -1

Answer Link

Otras preguntas

Earth is a close approximation of a natural closed system.  What are some ways that living in a closed system affects each of us.
All of the following are types of lyric poetry except; A. tankas. B. ballads. C. sonnets. D. madrigals.
What number is equivalent to 13/2
What were the reasons for the failure of the League Nations?
A movie starts at 7:00 pm and lasts 108 minutes. What time does the movie end?
Please answer:If a stadium holds 60000 people.1. If the stadium is 2/3 full, how many people are there?2. If the stadium is 3/4 full, how many people are there?
Earth is a close approximation of a natural closed system.  What are some ways that living in a closed system affects each of us.
Perimeter of a square with an area of 81cm2
select the product of (3x-4)(3x4)
select the product of (3x-4)(3x4)