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Oduvanchick [21]
3 years ago
15

Please help ASAP! Which ordered pair is a solution of this

Mathematics
2 answers:
olya-2409 [2.1K]3 years ago
7 0
<h3>Answer: Choice C.  (-2,2)</h3>

========================================================

Explanation:

For each possible answer choice, you'll plug in the given coordinates to see which results in a true equation or not.

If we try choice A, then we plug in x = 2 and y = -1 to get

-5x-9y = -8

-5(2)-9(-1) = -8

-10+9 = -8

-1 = -8 which is false

So (x,y) = (2,-1) is not a solution. We can cross choice A off the list.

You'll find a similar situation happens with choices B and D. They don't work either.

-------

Choice C works because...

-5x-9y = -8

-5(-2)-9(2) = -8 .... replaced x with -2, replaced y with 2

10-18 = -8

-8 = -8

We get a true equation. So (-2,2) has been confirmed to be a solution.

klio [65]3 years ago
5 0
D is the correct answer
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