Alex graphed the system of equations and stated that the solution is (5, 2). Check his solution algebraically.

Which statement is true?

Question

Alex graphed the system of equations and stated that the solution is (5, 2). Check his solution algebraically. 
 
Which statement is true?

anonymous · Answer

attachment

anonymous · Answer

Either c, or d

anonymous · Answer

Ok, do you have any reasoning behind your question? I like to know it is somewhat logical :)

anonymous · Answer

yeah because the graph is represented on the 5,2 value so, the graph has it a little bit further than what it is.

anonymous · Answer

Any answers? :)

anonymous · Answer

ok, then.... Fail

anonymous · Answer

What do you mean? I believe your answer I just like getting a few opinions, thats all :)

anonymous · Answer

Oh Ok. lol I thought you were pretending im not here, BOL

anonymous · Answer

Oh, no. Just waiting to see if there are other answers.

anonymous · Answer

Oh Ok lol.

texaschic101 · Answer

The solution is where the lines cross...so the solution is (5,2)...if the lines are graphed right

lets check your lines
y = -3/5x + 5 --- y intercept is (0,5)
to find x intercept sub in 0 for y
0 = -3/5x + 5
3/5x = 5
x = 5/(3/5)
x = 5*5/3
x = 25/3 = 8 1/3....x intercept is (25/3,0)

y = 2/5x + 0 --- y int is (0,0)

0 = 2/5x + 0
-2/5x = 0
x int = 0

Its not A, B, or C...so I am going with D

anonymous · Answer

Ok, but why wouldn't it be C? That seems like the correct ordered pair??

texaschic101 · Answer

The reason it is not C is because your lines are not graphed correctly. Therefore, the solution (where the lines cross) is incorrect

anonymous · Answer

Ok, I see. Thank You! Do you have time for 1 more question?

texaschic101 · Answer

Let me check something...if the solution is (5,2)
y = -3/5x + 5 ....now lets sub
2 = -3/5(5) + 5
2 = -3 + 5
2 = 2

y = 2/5x
2 = 2/5(5)
2 = 2

wait......answer is C...I am so sorry. I didn't think it was at first because the lines are graphed wrong...but by rechecking it, your answer is C

anonymous · Answer

(: Told you!

anonymous · Answer

Ok, thank you! Can you help me with 1 more?

anonymous · Answer

Yep and now that I have 3 answers I am 99% sure it is the right one ;) = HelpMe, Please!

anonymous · Answer

Thanks For The Medal! @texesechic101

texaschic101 · Answer

no problem

anonymous · Answer

Hey guys, I have 1 more question, can you guys help?

anonymous · Answer

Sure, What is it?

anonymous · Answer

I just posted it :) Thank You!

anonymous · Answer

no problem and do you guys know "What would be an example of higher concentration for a liquid?"

anonymous · Answer

No Idea, sorry!