4. Which of these are solutions to the following system of equations?

x - 2y = 7

13x + 7y = 8

a. (7,0)

b. (5, - 1)

d. (-2,2)

C. (3, - 2)

Step-by-step explanation:

We have to check each one answer in the following system:

x - 2y = 7

13x + 7y = 8

a. (7,0)

7 - 2.0 = 7 (it's true)

13.7 + 7. 0 = 8 (it's false)

It isn't a correct answer.

b. (5, - 1)

5 - 2. (-1) = 7 (correct)

13.5 + 7 (-1) = 8 (wrong)

It isn't a correct answer.

c. (-2,2)

-2 - 2.2 = 7 (wrong)

d. (3, - 2)

3 - 2. (-2) = 7 (correct)

13. (3) + 7. (-2) = 8 (wrong)

So, none of them is answer.