Question

VWhich system of equations has a solution of approximately (–0.6, 0.8)?

2x - 5 y = -5 and 14x + 5 y = -5
2x - 5y = -5 and 11x - 5y = 15
11x - 5y = 15 and 14x + 5y = -5
11x - 5y = 15 and 9x + 5y = 5

Answer 1

It's A.

Explanation:

Have a good day people. :)

Answer 2

2x - 5 y = -5 and 14x + 5 y = -5

Explanation:

we know that

When solving a system of equations by graphing, the solution is the intersection point both graphs

Find the solution of each system of equations

Part 1) we have

`2x-5y=-5` ----> equation A

`14x+5y=-5` ----> equation B

using a graphing tool

The approximately solution is (-0.625,0.75)

Round to the nearest tenth (-0.6,0.8)

see the attached figure N 1

Part 2) we have

`2x-5y=-5` ----> equation A

`11x-5y=15` ----> equation B

using a graphing tool

The approximately solution is (2.222,1.889)

see the attached figure N 2

Part 3) we have

`11x-5y=15` ----> equation A

`14x+5y=-5` ----> equation B

using a graphing tool

The approximately solution is (0.4,-2.12)

see the attached figure N 3

Part 4) we have

`11x-5y=15` ----> equation A

`9x+5y=5` ----> equation B

using a graphing tool

The approximately solution is (1,-0.8)

see the attached figure N 4