The line -x 0 x is known as the x-axis.
The line -y 0 y is known as the y-axis.
The plural of axis is axes.
The x-axis is horizontal, and the y-axis is vertical
Co-ordinates
are written as two numbers, separated by a comma, within round brackets
E.g (2,3), (5,7) and (-4,4)
The
first number refers to the x-co-ordinate.
The second number refers to the y-co-ordinate.
Co-ordinates are written alphabetically (x.y).
When describing co-ordinates, we always start at the origin.
To
describe the position A, we start at the origin and move two squares
in the horizontal
(x) direction. We then move three squares in the vertical (y) direction.
The co-ordinates of point A are therefore (2,3).
To
describe the position point B, we start at the origin and move two squares
in the horizontal (x) direction
We then move three squares in the vertical (-y) direction.
The co-ordinates of point B are therefore (2,-3).
