SOLUTION: Hello, my name is Cody McCullough. I need help witha problem that I am helping my brother with. His teacher and I got differnet answers and I want to know the answer to see if I am

Algebra ->  Expressions-with-variables -> SOLUTION: Hello, my name is Cody McCullough. I need help witha problem that I am helping my brother with. His teacher and I got differnet answers and I want to know the answer to see if I am      Log On


   

Question 30951This question is from textbook Algebra 1
: Hello, my name is Cody McCullough. I need help witha problem that I am helping my brother with. His teacher and I got differnet answers and I want to know the answer to see if I am wrong or right. The question is: Write this equation in standard form. y=4/5x+9 I got the answer to be 4x-5y=45. My brothers teacher got 4x-5y=-45.
PLEASE tell me the answer. Thank you.

P.S 4/5 is a fraction This question is from textbook Algebra 1

Answer by acerX(62) About Me  (Show Source):
You can put this solution on YOUR website!
Hey Cody. Your teacher is indeed correct
the original equation y=%284%2F5%29%2Ax%2B9
you had the right idea when you got to
%28-4%2F5%29x%2By=9 multiply through by 5
-4x%2B5y=45 multiply through by -1, this switches the signs of all the terms to give you
4x-5y=-45
You algebra is correct but you forgot to multiply the 45 by the negative 1