Exercise 50 Page 10

In an $(x,y)$ ordered pair, the first number shows the $x\text{-}$coordinate and the second number shows the $y\text{-}$coordinate.

1st point

Our first point is $(1,2).$ The $x\text{-}$coordinate $"1"$ tells us to move one unit in the positive horizontal direction. The $y\text{-}$coordinate $"2"$ tells us to move two units in the positive vertical direction.