MathCastle
Grade 5HardThe Coordinate Plane

The Coordinate Plane · Hard problem

Two number patterns make points. The xx-numbers start at 11 and add 22 each time. The yy-numbers start at 44 and add 55 each time. The first point is (1,4)(1, 4) and the second is (3,9)(3, 9). What is the 10th point? Write it as (x, y).