Coordinates - Learning Objectives

Coordinates

• The x-axis and the y-axis intersect at the origin.

• The lines of the grid are numbered using positive and negative integers.

• The coordinates of the origin are (0, 0).

Coordinates

• We can describe the position of any point on a 2-dimensional plane using coordinates.

• The coordinate of a point tells us where the point is relative to a starting point or origin.

• For example, when we write a coordinate (3, 5)

• (x-coordinate, y-coordinate)

• the first number is called the x-coordinate and the second number is called the y-coordinate.

Coordinates

• The first number in the coordinate pair tells you how many units along from the origin the point is in the x-direction.

• A positive number means the point is right of the origin and a negative number means it is left.

• The second number in the coordinate pair tells you how many units above or below the origin the point is in the y-direction.

• A positive number means the point is above the origin and a negative number means it is below.

• Along the corridor and up (or down) the stairs.

How do you correctly write an ordered pair?

• For example, when we write a coordinate (3, 5)

• the first number is called the x-coordinate and the second number is called the y-coordinate.

• Along the corridor and up (or down) the stairs.

Name the coordinate pair for point C.

• Remember - (x, along, y, up)

  To get to C, you need to go along 3 squares then up 4 squares

• This will give the coordinates (3, 4)

Which one of the pictures represents the correct location of J at (2,5)

• Grid a has the point J at (2, 5)

• 
  

What are the coordinates for the school?

• To get to the school you need to go 4 along and 1 up.

• The coordinates are (4, 1)

What is located at (5,3)?

• There is nothing at (5, 3)

• Point 'A' is 3 along and 5 up (3, 5)

Coordinates

The coordinate axes divide the grid into four quadrants.

In which quadrant is the point (-54, -29)?

The third quadrant is where both the x and y coordinates are negative.

Exit Ticket

Complete the Century task set for this week. You must do this to get your mark.