Which graph of ordered pairs shows a proportional relationship?

(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.

How many ordered pairs of positive integers satisfy xy=32?

Aramp rises 4 feet over a distance of 10 feet. what is the length of the ramp?