W.A.L.T: Reading and Writing Co-ordinates

Our Aim To locate things using co-ordinate grids

Definition x axis – a horizontal number line on a coordinate grid x

Hint x ‘is a cross’ (across ) x

Definition y axis – a vertical number line on a coordinate grid y

Definition Coordinates – an ordered pair of numbers that give the location of a point on a grid. (3, 4) (3,4)

Hint The first number is always the x or first letter in the alphabet. The second number is always the y the second letter in the alphabet (3,4)

How to Plot Ordered Pairs Step 1 – Always find the x value first, moving horizontally (2, 3) y x

How to Plot Ordered Pairs Step 2 – Starting from your new position find the y value by moving up (2, 3) y x

How to Find Ordered Pairs Step 1 – Find how far over horizontally the point is by counting to the right (positive) or the left (negative) (5, 4) y x

How to Find Ordered Pairs Step 2 – Now count how far vertically the point is by counting up (positive) or down (negative) (5,4) y x

What is the ordered pair? (3,5) y x

What is the ordered pair? (2,6) y x

What is the ordered pair? (4,0) y x

What is the ordered pair? (0,5) y x

What is the ordered pair? (1,1) y x

Plot This Ordered Pair (-1, 2) y x

Plot This Ordered Pair (1, -1) y x

Plot This Ordered Pair (2, -2) y x

Plot This Ordered Pair (-3, -2) y x