Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
DragonFlame
Group Title
Solve, using the substitution method.
y – 2x = 8
16 + 4x = 2y
 8 months ago
 8 months ago
DragonFlame Group Title
Solve, using the substitution method. y – 2x = 8 16 + 4x = 2y
 8 months ago
 8 months ago

This Question is Closed

hartnn Group TitleBest ResponseYou've already chosen the best response.1
y2x = 8 add 2x on both sides, what u get ?
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
y=9+2y
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
now plug in y= 8+2x in 2nd equation
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I thought of doing 2x=8y
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
that can work, but things will get complicated soon.
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
16+4x=2(8+2x)
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I see... I will use the way u told me than
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
yes, simplify 2(8+2x)
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
16+4x=16+4x
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
O.O IMPOSSIBLE
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
correct. now think logically, when is that true
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
not impossible its like 0=0
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
S0 infinite number of solutions
 8 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.1
you take any value of x or y 16+4x will always be = 16+4x so, yes, infinite solutions :)
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
yay! Thanks so much
 8 months ago

mathmale Group TitleBest ResponseYou've already chosen the best response.0
Note how one of the given equations is a multiple of the other given equation. That's all the info you need to decide "infinitely many solutions."
 8 months ago

DragonFlame Group TitleBest ResponseYou've already chosen the best response.1
I see, Thanks :)
 8 months ago
See more questions >>>
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.