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The answer is D

Step-by-step explanation:

D . -7 , - 1/2

Step-by-step explanation:

Substitute -4y - 9 for x in equation 1.

We have

3(-4y - 9) + 4y = -23

Expand the bracket

3 x -4y -3 x 9 + 4y = -23

-12y - 27 + 4y = -23

Rearrange the expression

-12y + 4y - 27 = -23

-8y - 27 = -23

Add 27 to both sides

-8y - 27 + 27 = -23 + 27

-8y = 4

Divide both sides by by -8

y = 4/-8

y = - 1/2

Now substitute - 1/2 for y in equation 2 to get x

We have

x = -4y - 9

x = -4 x -1/2 - 9

x = 4/2 - 9

x = 2 - 9

x = -7

Therefore

x = -7

y = - 1/2

ratio is 2 : 9

the answer is three

13.5 : 3