Help me out I’m not sure what the answer is

(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.

Express -5 2/5 as an improper fraction.

:)i need to know on which ones are corresponding, alternate interior, alternate exterior, or none of these.