Question

What is the y dash coordinate of the solution to the following system of equations

Answer 1

Step 1:

Write the systems of equations

`\begin{gathered} 3x\text{ - 6y = 6 eq\lparen1\rparen} \\ -3x\text{ + 3y = 9 eq\lparen2\rparen} \end{gathered}`

Step 2

To find the value of y, add both equations

`\begin{gathered} -3x\text{ + 3y + 3x - 6y = 6 + 9} \\ -3y\text{ = 15} \\ y\text{ = }(15)/(-3) \\ y\text{ = -5} \end{gathered}`