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Elenna [48]
3 years ago
13

Solve the system using elimination. 3x – 4y = 9 –3x + 2y = 9

Mathematics
1 answer:
Nadusha1986 [10]3 years ago
4 0

Answer:

X=9

Y=-9

Step-by-step explanation:

3x - 4y =9

-3x +2y=9 cross 3x and - 3x since they're opposite ــــــــــــــــــــــــ

-4y +2y =9 +9

-2y =18

Y =-18/2

Y= -9

Replace y in the first equation:

3x - 4 (-9)=9

3x +36=9

3x = 27

X= 27/3

X= 9

Hope this helps you.. Good luck

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VashaNatasha [74]

Given:

A quadrilateral WXYZ has vertices W(3, −5), X(1, −3), Y(−1, −5), and Z(1,−7).

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Solution:

We know that, r_{(90^\circ, O)}(WXYZ) means 90 degrees counterclockwise rotation around the origin.

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Using this rule, we get

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