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Whenever we draw a point on our grid, we'll call it "plotting a point."

The grid is really called a "graph" and the points we plot are called "coordinates."  These are really locations on a plane -- we're just finding and labeling them.

Coordinates are just ordered pairs of numbers like

( 3, 2 ) or ( 0, -5 ) or ( 1/2, 6 )

(Be sure not to confuse this with interval notation.
It may look the same, but, it's a totally different thing.)

Coordinates always follow this order:

( x, y )  <-- It's alphabetical!

( 3, 2 ) means that x = 3 and y = 2...

( 0, -5 ) means that x = 0 and y = -5...

( 1/2, 6 ) means that x = 1/2 and y = 6.