Hello tutors please help with the following questions in the images by providing all the steps and information. Thank you.

note: this is not for an assignment but merely for my understanding and comprehension so please for the sake of my understanding please try to be as accurate as possible.

1. Find the slope at points A, B, C, D, and E. How did you get those numbers? Do you think they are exactly correct? Why or why not? Are there any you aren't sure about? 2. Find the area of the shaded region. How did you come up with that answer? Do you think it is precise? Why or why not? 3. Find the area of the shaded region. How did you come up with that answer? Do you think it is precise? 1Why or why not? 4. Find the slope of the graph at points A, B, C, D, E, F, and G. How did you get those numbers? Do you think they are precise? Why or why not? Are there any you aren't Sure about