Asked by Sierra.

What is the solution to the system? use elimination .

-18.6x+ 17.2y=90.2

14.2x+ 3.4y= -35.8
a.(3,2)
b.(-3,2)
c.(2/3,4/9)
d.(2,3)
IS IT D??
Answered by Ms. Sue
You've already been told it's not D.

Sub the numbers in for x and y.

Answered by Sierra.
what does sub the numbers mean ?? Please help.
Answered by Sierra.
@ms.sue
Answered by Ms. Sue
It means substitute the numbers for the unknown quantities.

-18.6x+ 17.2y=90.2

(-18x * 2) + (17.2 * 3) = 90.2

As another tutor told you, that doesn't work.

Answered by Sierra.
thank you. so I did that and is it b ?
Answered by Ms. Sue
Yes. B is right.

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