kyky5017 kyky5017

20-11-2019
Mathematics

contestada

What is the value of y if y=-4x+11 and 3x+y=9

Respuesta :

Yang100 Yang100

23-11-2019

Answer:

y=3

Step-by-step explanation:

y=-4x+11

3x+y=9

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

3x+(-4x+11)=9

3x-4x+11=9

-x+11=9

-x=9-11

-x=-2

x=2

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

3(2)+y=9

6+y=9

y=9-6=3

x=2, y=3.

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