abbyotto13
abbyotto13 abbyotto13
  • 25-01-2017
  • Mathematics
contestada

How do you solve 2x+y=4 and -x+y=1 using the linear combination method?

Respuesta :

MathSquared
MathSquared MathSquared
  • 25-01-2017
Is this for solving systems of equations? Or is it for finding y = mx + b form.
Answer Link
apologiabiology
apologiabiology apologiabiology
  • 25-01-2017
linea combination
combine them to elimiante a vairable
elimiante y's
multily 2nd equation by -1 to get x-y=-1
add that to first one

2x+y=4
1x-y=-1 +
3x+0y=3

3x=3
divide both sides by 3
x=1

sub back

x-y=-1
1-y=-1
minus 1 both sides
-y=-2
times -1
y=2

(x,y)
(1,2)
Answer Link

Otras preguntas

(Apex Question, Help?) Which polynomial represents the difference below 2x^2+7x+6 - (3x^2-x) A. -x^2+6x+6 B. 2x^2+4x+6 C. 2x^2+5x+6 D. -x^2+8x+6
What dose it mean for a molecule to diffuse down a concentration gradient?
how is 1.479 a rational number​
pleaseee someone help
Which colony mostly governed themselves?
Attractive forces between atoms/molecules become stronger as the particles move closer together. These attractive forces are called ____________forces. Options:
which agrument is the author making in this text
24. Use sentence 9. (1 point) wrote A- noun B- pronoun C- verb D- adverb
In any circuit, current is inversely proportional to:potentialresistanceemfvoltage​
Which of the sentences below has an expletive?1. There are mangoes on the table.2. Jasmine is a girl.