How does Christopher Paolini use imagery in Eragon: Inheritance Book One?

Imagery:

"Eragon recoiled in shock. Standing in front of him, licking off the membrane that encased it, was a dragon." (Page 37)

She looked at him with intelligent eyes. Deep in his mind he felt her satisfaction. Yes. Something clicked in his head and her voice echoed, as if from a great distance. He grinned in response. Saphira started humming." (Page 59)