MathCastle
Grade 5ChallengeThe Coordinate Plane

The Coordinate Plane · Challenge problem

A rule makes points: the yy-coordinate is 22 times the xx-coordinate, plus 33. So (0,3)(0, 3), (1,5)(1, 5) and (2,7)(2, 7) follow the rule. Which point that follows the rule has coordinates that add up to 3939? Write it as (x, y).