What is the slope of (8,14) and (16,28)

Find the area of a trapezoid with a height of 23, base 1 of 10 and base 2 of 18

Which questions would most a reader identify the author's purpose for writing? check all that apply. what type of text is this? what type of reviews did the book receive? how many copies of the book have been sold? what is the central idea? how does this text make one feel?

Ijust need these 2 questions answered (the second pic is just confirmation i'm not confident in that answer)