Here's the question you clicked on:
raebaby420
PLEASE HELP :3 Solve 2x + 5y = −13 3x − 4y = −8 (4, 1) (−4, 1) (4, −1) (−4, −1)
@Jack1 for ones like these: there is no parenthesis, or exponents, so I staret with the multiplication.. I want to get my y's to one side.. how do I do that? I divide them?
i like to subtract first to isolate the one term on one side so 2x + 5y = −13 2x = -13 -5y x = -(13/2) - (5/2)y
or if not, get them both in terms of 6x
2x + 5y = -13 so 6x + 15y = -39 and 3x - 4y = -8 so 6x - 8y = -16 therefore 6x = -39 - 15y and 6x = -16 + 8y
AH I thought so, u do them apart and I knew I took the 5 from that side
2x + 5y = −13-------(1) 3x − 4y = −8 --------(2) in equation 1 2x=-13-5y x=-13-5y/2 put x in equation 2 3(-13-5y/2)-4y=-8 -39-15y/2-4y=-8 -39-15y-8y=-16 -23y=-16+39 -23y=23 y=-1 put y in equation 1 2x + 5y = −13 2x+5(-1)=-13 2x-5=-13 2x=-13+5 2x=-8 x=-4
6x = -39 - 15y = -16 + 8y -39 - 15y = -16 + 8y -39 = -16 + 23y -23 = 23y -1 = y
The next one I have I have to get the value of y.. is it the same way we get the value of x?
exactly the same way, it doesn't matter if the term is called x or y or q, its all the same when using simultaneous equations
What is the value of y in the solution to the following system of equations? 5x − 3y = −11 2x − 6y = −14 −1 0 1 2
This is what I have. ill let u no what I get
5x-3y=-11 +3y ____________ 5x=-11+3y
ignore uri, he's a little slow and apparently i hate him ;D
Huh? I'm a girl..and that's not the way to talk.
Where do I go from 5x=-11+3y
sure u are... online anyway an i bet u tell that to all the boys ;P
Ah? last time i checked..i was a girl.
double it change it to 10x
..... sooo no one is going to help me but we will argue on my question?... Thanks guys
Now your confusing me and not helping me
You are not even teaching her the right thing.Also,You are very mean and you don't know how to respond to someone..when they ask you a question. I might link you this: http://openstudy.com/code-of-conduct Next time if you're mean to me.I'll report you to Preetha. @Jack1
so thats equation 1 in a form we can use now for equation 2: 2x − 6y = −14 change it so u get 10x on one side
sorry, back to equation 1: it should be 10x = -22 + 6y, not 10x = -22 + 6, my bad now equation 2: 2x − 6y = −14 (times 5) 10x - 30y = -70 (add 30y to both sides) 10x - 30y + 30y = -70 + 30y 10x = -70 + 30y
so equation 1 is now 10x = -22 + 6y and equation 2 is now 10x = -70 + 30y so 10x = -22 + 6y = -70 + 30y -22 + 6y = -70 + 30y can u solve from here?
@Jack1 She made a new question http://openstudy.com/study#/updates/52120b0fe4b0450ed75d4d22
You called me a boy dat mad me cry..:3
im sorry i called u a boy, i was jus playing and i took it too far, my bad