PLEASE HELP I KNOW I DONT HAVE THAT MUCH POINTS BUT NOBODY HAS HELPED ME WITH THIS :C I'LL GIVE BRAINLIEST 5 STARS AND A THANKS ITS DUE SOON SO THANKS IF U HELPED :C

Answer:
it is a ( y = -x + 30 )
Step-by-step explanation:
i used a graph to check with the answer