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avatar+44 

3x+2y=16

7x+1y=19

 

A. (-2,-5)

B. (2,5)

C. (-2,5)

D. (2,-5)

 Dec 18, 2020
 #1
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+1

Here is an easy way:   Substitute in the given x,y value choices to see which set 'works'

 Dec 18, 2020
 #2
avatar+36 
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Just solve the systems (I will be using elimination):

3x + 2y = 16
-2(7x + 1y) = -2(19)

--------------------------

3x+2y=16
-14x -2y = -38

-11x = -22

x = 2

y = 5

(2,5)

Your answer is therefore B.

 Dec 18, 2020

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