[Help asap, Will mark brainliest] In the coordinate plane, the point X(2, 1) is translated to the point X'(6,-2). Under the same translation, the points Y(4, 5) and Z(-1, 4) are translated to Y' and Z' , respectively. What are the coordinates of Y' and Z'?

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?