Okay well it’s asking you to graph
x=y-7
Typically the equation for a line is y=mx+b so you want y by itself so it can serve as a function of x
So you can add 7 from both sides and get
y=x+7
which is the form that we want. I don’t know how you input the equation into your application but the equation you need is y=x+7. The rest is up to you to do.