Question

9.which of the following ordered pairs is a solution of the given system of linear equations

answer choices and question are in picture thank you so much!

Answer 1

the answer is c

Explanation:

all steps are pictured

Answer 2

Option C. The solution is the point (1,8)

Explanation:

we have

`x+y=9` -----> equation A

`x-(1)/(2)y=-3` ----> equation B

Solve the system by elimination

Multiply the equation A by -1 both sides

`-x-y=-9` -----> equation C

Adds equation C and equation B

`-x-y=-9\\x-(1)/(2)y=-3\\-------\\-y-(1)/(2)y=-9-3\\\\-(3)/(2)y=-12\\ \\y=2*12/3\\ \\y=8`

Find the value of x

`x+y=9` ---->
`x+8=9` ---->
`x=1`

therefore

The solution is the point (1,8)