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you draw points on a coordinate grid, this is referred to as plotting points. Several
When
have been plotted below. Answer the questions to determine how to name the
points
6
y
1 Based on the given coordinates, write down the coordinates of the remaining points.
2 Describe how to determine the coordinates of a point on the Cartesian plane.
3 What do all of the points on the x-axis have in common? What do all of the points on
4 Research the name given to the point where the two axes meet and write down its
5 Which quadrant has negative values for both the x and y axes?
Each of the four sections of the Cartesian plane (called quadrants) is represented with
6
number. Do some research and write down how the quadrants are numbered.
a
7 On the coordinate grid, what do negative numbers represent?
a coordinate grid ranging from −10 to 10 on both axes, plot the
Using
in each group of ordered pairs below and join them up in order,
points
a ruler to make straight lines. Each group is its own shape. What
using
your picture of?
is
1 (0, 0), (6, 0), (0, 8)
2 (−1, 0), (−5, 0), ( −1, 6)
3 (−5, −2), (6, −2), (5, −4), (−4, −4)
4 (0, 8), (0, 10), (2, 9)
Investigation 2 – Plotting coordinate points
criterion
B
coordinates of a point.
Some of the points on the grid below are described using their coordinates:
A(−4, 3) Q(0, 4) W(4, −4)
J
5
Q
4
A
3
M
2
1
P
B
0
–3 –4 –5
–2
–1
6
1 2 3 4 5
x
–1
–2
E
S
–3
N
W
–4
P( , ) N( , ) E( , ) S( , ) M( , ) J( , ) B( , )
the y-axis have in common?
coordinates.
Activity 2 – Integer pictures
Continued on next page
3 Integers
102