1 Reflection across the x-axis. R(-2,2)→R J(-1,4) ► J'_ G(3,4) →G​

I’m stuck on this i don’t understand.

How do i solve using pythagorean theorem?

Josh has a rewards card for a movie theater he receives 15 points for becoming a rewards card holder he earns 3.5 points for each visit to the movie theater he needs at least 55 points to earn a free movie ticket which inequality can josh use to determine x, the minimum number of visits he needs to earn his first free movie ticket.