Lesson 2

• Mathematics
• Lower Secondary (Key Stage 3)

Lesson 2

Describe what do we mean by
a coordinate pair

Given the equation y = x, select the incorrect coordinate pair.

1. (3, 3)
2. (3, -3)
3. (-3, -3)
4. None of them

Given the equation y = x, select the correct coordinate pair.

1. (-3, 3)
2. (3, -3)
3. (3, 3)
4. None of them

Given the equation y = x + 2, select the correct answer.

1. y takes the same value as x
2. y always takes the 2
3. y is always 2 less than the value of x
4. y is always 2 more than the value of x

Exercise 1

Complete the table for the equation y = x and write down the coordinate pairs.

x
y
(x, y)

Exercise 1

Complete the table for the equation y = x and write down the coordinate pairs.

x		-2		0		2
y	-3
(x, y)			(-1, 1)		(__ , 1)

Exercise 1

Complete the table for the equation y = x and write down the coordinate pairs.

x	-3	-2	-1	0	1	2
y	-3
(x, y)			(-1, 1)		(__ , 1)

Exercise 1

Complete the table for the equation y = x and write down the coordinate pairs.

x	-3	-2	-1	0	1	2
y	-3	-2	-1	0	1	2
(x, y)			(-1, 1)		(__ , 1)

Exercise 1

Complete the table for the equation y = x and write down the coordinate pairs.

x	-3	-2	-1	0	1	2
y	-3	-2	-1	0	1	2
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-3	-2	-1	0	1	2
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-3	-2	-1	0	1	2
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-3 + 1	-2 + 1	-1 + 1	0 + 1	1 + 1	2 + 1
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-2 + 1	-1 + 1	-1 + 1	0 + 1	1 + 1	2 + 1
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-2	-1	0	1	2	3
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-2	-1	0	1	2	3
(x, y)	(-3, -3)	(-2, -2)	(-1, 1)	(0, 0)	(1 , 1)	(2 , 2)

Exercise 2

What would you change in the table if the equation is now y = x + 1?

x	-3	-2	-1	0	1	2
y	-2	-1	0	1	2	3
(x, y)	(-3, -2)	(-2, -1)	(-1, 0)	(0, 1)	(1 , 2)	(2 , 3)

1. 1
2. 4
3. 5
4. 9

1. (5, 2)
2. (2, 7)
3. (6, 8)
4. (19, 17)

1. 
2. 
3. 
4. 

Drag the colour disc that is part of a line on the circle beneath the correct equation.  

   x

   y

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