3 years ago

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

Mathematics

1 answer:

lisabon 2012 [21]3 years ago

5 0

Answer:

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.

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