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

what effects on sectionalism did the industrial revolution have?
How do you say no pushing in french I told my teacher is that how you say it ne pas pousser She said no
Mr Jacques wrote a bonus problem on the board. I f Gina correctly answer, she gets extra time to read. The problem is to write a statement that correctly relat
write the fraction with the greatest value 7/10, 1/5, 9/10
how do you use manacles in a sentence? I
Help please!!!!!!!!!!!!!!!!!!!!!!
Prove that the perpendicular at the point of contact to the tangent to a circle passes through the centre.
the larger root of the equation (x+4)(x+3)=0 is and why???
how long did the revolutionary war last
HELP Acceleration is defined as the rate of change for which of the following? A. time B. velocity C. position D. displacement Please explain as well :D