(6,-5)(9,r)
(r - (-5) / (9 - 6) = -4
(r + 5) / 3 = -4
r + 5 = -4 * 3
r + 5 = -12
r = -12 - 5
r = - 17 <===
Answer:
The value of y is 
Step-by-step explanation:
we have
-----> equation A
-----> equation B
To eliminate the x-variable and find the value of y Multiply the equation A by -18/4 both sides or multiply the equation B by -4/18 both sides
I choice
Multiply the equation A by -18/4 both sides
![(-18/4)[4x+3y]=6*(-18/4)](https://tex.z-dn.net/?f=%28-18%2F4%29%5B4x%2B3y%5D%3D6%2A%28-18%2F4%29)
------> equation C
Adds equation B and equation C

You can write it as: p/6
Hope this helps!
Answer
The answer and procedures of the exercise are attached in the following archives.
Step-by-step explanation:
You will find the procedures, formulas or necessary explanations in the archive attached below. If you have any question ask and I will aclare your doubts kindly.