Question

7x+2y=4

y=x+1
Solve the system of equations.
(1/3,4/3)
(2/9,11,9)
no solution

Answer 1

The solution of system is x= 2/ 9 and y= 11/ 9

Explanation:

See the attached figure

Answer 2

Answer: SECOND OPTION

Explanation:

You can solve the system of equations by the method of substitution:

- You must susbtitute the second equation into the first equation and solve or x:

`7x+2(x+1)=4\\7x+2x+2=4\\9x=4-2\\9x=2\\x=(2)/(9)`

- Now, you must susbtitute the value of x obtained above into the second equation to calculate the value of y. Then, you have:

`y=(2)/(9)+1\\\\y=(2+9)/(9)\\\\y=(11)/(9)`

Therefore, you obtain:

(
`(2)/(9),(11)/(9)`)