Roland has three paperback books in for hard cover books. each hard cover book is worth $11 more than each paper back book. if the value of all his books is $79 what is the cost of one paper back book? right and solve an equation to find your solution.

Graph a triangle (xyz) and reflect it over the line y=x to create triangle x’y’z’. describe the transformation using words. draw a line segment from point x to the reflecting line, and then draw a line segment from point x’ to the reflecting line. what do you notice about the two line segments you drew? do you think you would see the same characteristics if you drew the line segment connecting y with the reflecting line and then y’ with the reflecting line? how do you know?