Question

What is the y-coordinate of the solution of the system of equations?
Y= 3x – 26

2x - y = 19
Enter your answer in the box.
y=

Answer 1

Answer:

{y,x}={-5,7}

Step-by-step explanation:

[1]           y=3x-26

 [2]           2x-y=19

// Solve equation [1] for the variable  y  

 

 [1]    y = 3x - 26

// Plug this in for variable  y  in equation [2]

  [2]    -(3x-26) + 2x = 19

  [2]     - x = -7

// Solve equation [2] for the variable  x  

  [2]    x = 7  

// By now we know this much :

   y = 3x-26

   x = 7

// Use the  x  value to solve for  y  

   y = 3(7)-26 = -5