cece8755 cece8755
  • 13-03-2019
  • Mathematics
contestada

Solutions to 2 variables equations

-4x+7=2y-3

A) only (2,1)
B)only (5,-5)
C) both
D) neither

Respuesta :

choixongdong
choixongdong choixongdong
  • 13-03-2019

Answer:

C) both

Step-by-step explanation:

-4x+7=2y-3

Plug in

(2,1)

-4(2) +7 = 2(1)-3

-8 + 7 = 2 - 3

-1 = -1

So (2,1) is the solution

(5,-5)

-4(5) +7 = 2(-5)-3

-20 + 7 = -10 - 3

-13 = -13

So (5,-5) is the solution

Answer:

C) both

Answer Link

Otras preguntas

What do South America's busiest populated areas have in common?
Early People in the Central American Land Bridge 2 Things that people did when they no longer were nomadic hunters
who was the 20th president of the United States? ​
Carlos is 3 times as old as Maria. Maria is 16 years younger than Carlos. How old is Carlos?
To determine a student’s grade, a teacher throws out the lowest grade obtained on 5 tests, averages the remaining grades, and round up to the nearest integer. i
help me plz.........​
(-1) + (-7) answer with work shown
Which is the best reason for the Puritans' spirit of community? O Satan would destroy those not engrossed in godly activity. O They had to work together to be a
What ocean would you find at 70 degrees E and 80 degrees N?
A store in Melrose, Massachusetts advertised a 35-mm camera for $259.99 and a wide-angle lens for $89.99. What is the total purchase price if the state sales ta