Seudónimo Seudónimo
  • 13-09-2018
  • Mathematics
contestada

solve the system using substitution.
-5x+y=4
4x-4y=16
a-(-4,0)
b-(1,4)
c-(0,-4)
d-(4,1)

Respuesta :

grujan50
grujan50 grujan50
  • 13-09-2018

Substitution method is one of the ways to solve this system.

-5x+y=4 and 4x-4y=16.

First we will divide the second equation with number 4 and get

x-y=4 => x=y+4 than we will replace x in the first equation

-5(y+4)+y=4 => -5y-20+y=4 => -4y=4+20 => -4y=24 => y=-6

x-(-6))=4 => x+6=4 => x=4-6=-2    (x,y)=(-2,-6)

Good luck!!!

Answer Link
segesma1699c segesma1699c
  • 14-11-2020

Answer:

I believe it is (0,-4)

Step-by-step explanation:

good luck!

Answer Link

Otras preguntas

What is 17% as a fraction in simplest form
what is 0.3 x0.6 this is new to me
8x+15=3x-20 how do you do this
A metal box, attached to a small parachute, is dropped from a helicopter. explain in terms of the forces acting; why:(i) its velocity increased immediately afte
What values can n have to make each equation true |n|=3 and |n|=14 |n|=1
In the sentence   The football players train for the big game.    what part of speech is train                            The train sped over the tracks.
Explain how you know that 7/12 is greater than 1/3 but less than 2/3?
How is the coastline of new jersey different from the coastline of Maine
A metal box, attached to a small parachute, is dropped from a helicopter. explain in terms of the forces acting; why:(i) its velocity increased immediately afte
How did geographic features influence the Louisiana purchase and the monroe doctrine?