Got Homework?
Connect with other students for help. It's a free community.
Here's the question you clicked on:
 0 viewing
Sorry for being a pain :D
Use the substitution method to solve the following system of equations.
4x − y = 3
7x − 9y = −2
(1, 1)
(6, −3)
(6, 1)
(1, −3)
 7 months ago
 7 months ago
Sorry for being a pain :D Use the substitution method to solve the following system of equations. 4x − y = 3 7x − 9y = −2 (1, 1) (6, −3) (6, 1) (1, −3)
 7 months ago
 7 months ago

This Question is Closed

HeroBest ResponseYou've already chosen the best response.1
Add y to both sides, then subtract 3 from both sides to isolate y in the first equation. Doing so gives: y = 4x  3 The expression for y can be substituted into the second equation: 7x  9y = 2 and after substitution we have 7x  9(4x  3) = 2 Now we simplify and solve for x: 7x  36x + 27 = 2 (7  36)x + 27 = 2 (36  7)x + 27 + 2 = 0 (29)x + 29 = 0 29 = 29x 29/29 = x 1 = x Now plug the value for x back into the one of the original equations to get y.
 7 months ago

raebaby420Best ResponseYou've already chosen the best response.0
I don't know how to get the Y... that's why im asking for help..
 7 months ago

raebaby420Best ResponseYou've already chosen the best response.0
Do I do it the same way you got x?
 7 months ago

HeroBest ResponseYou've already chosen the best response.1
We isolated y earlier to get y = 4x  3 If we substitute x = 1 into that equation, we get y.
 7 months ago

HeroBest ResponseYou've already chosen the best response.1
y = 4(1)  3 y = 4  3 y = 1 Therefore, the point is (1,1)
 7 months ago

HeroBest ResponseYou've already chosen the best response.1
Reread it all over again, but slowly.
 7 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.