Solve this system of equations using any method.

4x – y = 5
3x + y = 16

(3, 7)
(3, 5)
(4, 11)
(4, 4)

Question

Solve this system of equations using any method.

4x – y = 5
3x + y = 16


       (3, 7)
       (3, 5)
       (4, 11)
       (4, 4)

anonymous · Answer

On the second equation, what does y equal?

anonymous · Answer

its (3,7)

anonymous · Answer

@Christhewiz187 We try to help people, not just give them the answers, when they take tests the answers don't just appear.

anonymous · Answer

ya they ask us then they do appear

anonymous · Answer

@satellite73 Am I right?

marigirl · Answer

4x – y = 5  and 3x + y = 16 
Lets do substitution (only because I like it better lol)
let us take the second equation and make y the subject. once you have done this replace the y (i.e substitute) in the first equation by this expression.
Then u will see that you  only have x as the only variable in your equation which will allow you to solve for x and find the x intercept where both the graphs cross over.

anonymous · Answer

I asked to learn how to do it but thanks

anonymous · Answer

'Preciate it

anonymous · Answer

@Spiffy2wice Can you answer my first question? I also like substitution @marigirl :D What does y equal in the second equation?

anonymous · Answer

she didn't specify so im not sure

marigirl · Answer

from your second equation, 3x + y = 16 
can u make y the subject. (i.e y on the left side by it self)