Is the Slope Linear?

So your idea is that when you have your landa and you have your temperature, your slope. But is it just temperature? Is the teperature to thet temperature? So number one, it should look linear if it doesn't pride non soething wrong there,. And nmer two, what you should be seeing is a the slope value that is equal to your constant - which is predicted by wine's displacement law. No, i think i'm messing up the stephens law part. Again.