Software A costs ,000 plus 0 per additional site license. Software B costs 00 plus 00 per addition?

Software B costs $2500 plus $1200 per additional license. when I asked the question earlier I think that I was misunderstood. I am working on solving equations by graphing. I am to write two equations that represent the cost of each software from the problem above then estimate the break even point of them. I am having trouble setting up my equation. I am using 13000 + 550 x = y and 2500 + 1200x = y.