BeautyQueen97
BeautyQueen97 BeautyQueen97
  • 22-01-2019
  • Mathematics
contestada

Use substitution to solve the system of equations.
3x + 2y = 2
y = x - 9

(4, -5)
(-5, 4)
(4, 13)
(20, 11)

Respuesta :

MrsStrong
MrsStrong MrsStrong
  • 22-01-2019

Answer:

(4,-5)

Step-by-step explanation:

You can use substitution to substitute the answer options in for x and y or substitute an equation in to find each variable.

Substitute an equation is the traditional method and will allow you to solve without any answer options.

1. Substitute y=x - 9 into 3x+2y=2.

3x+2(x-9) = 2

3x+2x-18=2

5x-18=2

5x=20

x=4

2. Substitute x=4 into y=x-9.

y = 4-9

y=-5

(4,-5) is the solution.

Answer Link

Otras preguntas

Why was Jamestown built in triangle shape?
y/-5=1/10 Enter your answer as a reduced fraction.
8i-(12-4i)+7√-9 show work please
Hawaii has an area of 1.1 × 10^4 square miles and a population of 1.2 × 10^6 people. Which key strokes on a calculator will give the population density of Hawai
please help help help
Fill in the blank with the French word that best completes the sentence. Djeneba vient de l'Afrique. Elle est______. africaine Africaine africain Africain
A sample of seawater contains 34.5 g sodium chloride per liter. To the correct number of significant figures, how many milligrams of sodium chloride are in 75.0
This system was the main economic system between the New and the Old worlds which brought goods back and forth between the two continents. Two-way trade Three-w
3 - 5y = -37 for math 8th
Match the character with the correct qualities.​