how can I solve this system of linear equations by substitution 3x-2y=9 and y=2x-7

Question

17-05-2016
Mathematics

contestada

how can I solve this system of linear equations by substitution 3x-2y=9 and y=2x-7

Respuesta :

Otras preguntas

In five to seven sentences construct an argument for or against this statement:Access to technology is the most influential factor in determining the level of d

Find the area I will make you Brainliest (show working)

please help i'll mark big brain

Was schenkst du deinem Freund? Ich scher 1. was / du / geben / deine Freundin /? / (CD)?

A 24 foot tall streetlight casts a shadow that is 18 feet long. How long of a shadow is cast by a nearby parking meter post that is 4 feet high? WILL MARK BRAI

Find the equation of the tangent line at the given value of x on the curve. y^3+xy^2- 4=x+4y^2; x=4

You launch a ball in the air with an initial velocity of 25 m/s. What is the velocity at the top of the arc before it starts back down? A. 25 m/s B. 20 m/s C. O

i need help solving for X =

the smallest of the posterior extensors of the elbow joint is the __________.

apologiabiology apologiabiology · Answer 1 · 2016-05-17T02:07:46+02:00

apologiabiology apologiabiology

17-05-2016

y=2x-7
therfor we can SUBSITUTE 2x-7 for y whereever we see y in the other equation

3x-2(2x-7)=9
3x-4x+14=9
-x+14=9
minus 14 both sides
-x=-5
mulitly -1
x=5

sub back

y=2x-7
y=2(5)-7
y=10-7
y=3

(5,3)

Answer Link