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

r+5------. =. -16 3​
The cold water from deep in the ocean contains
what is 1/2x + 8 < -4 ?
A(n) _____paragraph flows smoothly because each sentence is connected to others by patterns in the language such as repetition and transitions
What is the slope of the line that passes through (-5, 0) and (-5, 5)
What process must cells in these environments use to get the energy needed for life processes out of the food molecules they take in?
Which type of promotion does a business use in case its sales revenue has fallen below expectations? Businesses generally use________ to attract more customers
PLEASE I NEED HELPPPPPPPPPPPP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
How many total atoms are in the compound below? 3C6H12O6 A) 3 B) 24 C) 72
Type the correct answer in the box. Round off your answer to the nearest integer. B A and Care right angles. m p =___degrees.