Question

What equation is solved by the graphed systems of equations?

Two linear equations that intersect at the point 7, 25.

3x + 4 = 5x - 10
3x - 4 = 5x - 10
3x + 4 = 5x + 10
3x - 4 = 5x + 10

Answer 1

Can someone please help me?

Answer 2

@confluxepic

Answer 3

@thesmartone

Answer 4

@willreel

Answer 5

i think A!(:

Answer 6

how did you come up with that?

Answer 7

\(\huge\color{blue}{Welcome~To~OpenStudy!}\)
@willreel
Remember. Direct answers are not allowed.
http://openstudy.com/code-of-conduct

Answer 8

my brother said that is what he think!

Answer 9

I know I just need someone to help me so I can see the steps. I want to learn how he came up with the answer

Answer 10

@TheSmartOne

Answer 11

@confluxepic what r u talking about!?!?

Answer 12

ur weird!(:

Answer 13

http://prntscr.com/5rf2cv

Answer 14

Hey IceFire :)

So if we have the point \(\Large\rm (7, 25)\) as our point of intersection,
notice that our lines intersect at an x-coordinate of 7.

So which equation gives us a value of x=7?
How bout the first one? Do you know how to solve for x?
3x + 4 = 5x - 10

Answer 15

omg what ever i am just trying to help her out! wow

Answer 16

I think I have to use the point slope formula

Answer 17

I have to get y to one side

Answer 18

Hmm that sounds like a lot of extra work >.<
Just solve each expression they gave you,
only one of them will give you x=7 as a solution.

Answer 19

So do I just subtract one of the x's from both sides

Answer 20

3x + 4 = 5x - 10

Yes, that would be a good first step.
Since the 5x is larger, let's subtract 3x from each side.

Answer 21

It doesn't matter which you subtract, but if you subtract the smaller one (as I suggested), then you don't end up with a negative sign on your x's.
Just makes it a little easier to deal with.

Answer 22

oh ok

Answer 23

0=2x-14

Answer 24

3x + 4 = 5x - 10
Well, when you subtracted 3x from each side, you got this,
4 = 2x - 10
yes?

I think you would prefer to move the 10 at this point, not the 4.
Since it's being subtracted, we do the inverse and add 10 to each side, yah?

Answer 25

yes

Answer 26

14=2x

Answer 27

Good good good.
The 2 is multiplying the x,
so again, do the inverse: divide both sides by 2.

Answer 28

7=x or x=7

Answer 29

Ooo yay! So looks like the first option worked out! :)

Answer 30

yep :)

Answer 31

thanks for the help I really appreciate it

Answer 32

The other ones end up giving you
x=3
x=-3
x=-7

So yay we found it :)
np!

Answer 33

Please close this post if you're done.
Thanks! :D

Answer 34

Yeah. @arabpride
Considering this is one month old.

Answer 35

Monkey.. I know <.<
I didn't realize >.>