-8 is the answer to your question
Answer:
<h2>
<em><u>The answer is: 18</u></em></h2>
<em><u>Hope this helps you! </u></em><em><u>.</u></em>
Forgive me but they deleted my answer for it did not have any work to be shown providing you know how to do Algebra you get X= 12 as your outcome. <span />
This is indeed a linear equation. y-4x=9 in standard form is y=4x+9.