Point a is the pre-image of a vertex of a square and is located at (–10, 8). the square is dilated with the center of dilation at the origin. point a’ is the image and is located at (–7.5, 6). what is the scale factor of the dilation?

(c) the diagram shows the first three shapes of a matchsticks arrangement. first shape = 3second shape = 5third shape = 7given m represents the number of matchstick used to arrange the n'th shape.(i) write a formula to represent the relation between m and n. express m as the subjectof the formula.(ii) 19 matchsticks are used to make the p'th shape. find the value of p.