Que signifuca (1,r) en matematicas?

Hello from MrBillDoesMath!

(1,r) is point on the Cartesian plane

Discussion:

(1,r) is an ordered pair with a first component (the "x" component) and a second component (the "y" component). In this case  (1,r) appears to be a point (punto) whose x coordinate is 1 and whose y coordinate is "r"

Thank you,

MrB

-2

7 - 9 = -2

reversed:

-2 + 9 = 7