The Cartesian coordinate system consists of two perpendicular number lines that intersect at the origin and form four regions called quadrants. It was created by the French mathematician Rene Descartes. Points on the plane are represented by ordered pairs (x, y), where x is the point's position on the horizontal x-axis and y is its position on the vertical y-axis. Several example points are given along with their coordinates and quadrants.

26. It is consisting of two real
number lines that intersect at a
center point called origin that
formed a right angle.
y - axis - Vertical number line
x - axis - Horizontal number line

27. Which is named after the
French mathematician Rene
Descartes (1596 – 1650)
The x- and y – axes breaks the
plane into four regions called
Quadrants.

28. An ordered pair ( x , y )
represents the position of a
point relative to the origin
x - coordinate - abscissa
y - coordinate - ordinate

29. Let’s try to plot these points:
A (4 , 7)
B (-6 , 0)
C (-2 , 6)
D (5 , 10)
E (-4 , -6)

30. Let’s try to find this out!

31. Plot, label and identify the quadrant
of the following coordinates
F (-3 , 2)
G (4 , -3)
H (-2 , -4)
I (5 , 3)