Lesson 1

• Mathematics
• Lower Secondary (Key Stage 3)

Lesson 1

Calculating y Coordinate Values

Answer the following questions. 

If y = 12x, calculate the value value of y for each value of x

          

x = 0

x = 1

x = 2

x = -1

x = -2

x = 0.5

x = 0.25

x = 0.1

Calculating y Coordinate Values

Answer the following questions. 

If y = 12x, calculate the value value of y for each value of x

          

x = 0

x = 1

x = 2

x = -1

y = 0

y = 12

y = 24

y = -12

x = -2

x = 0.5

x = 0.25

x = 0.1

Calculating y Coordinate Values

Answer the following questions. 

If y = 12x, calculate the value value of y for each value of x

          

x = 0

x = 1

x = 2

x = -1

y = 0

y = 12

y = 24

y = -12

x = -2

y = -24

x = 0.5

x = 0.25

y = 3

x = 0.1

y = 1.2

y = 6

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

x = 2

y = 1

y = 3

x = 9

Drag the correct coordinate pair onto the box that matches the missing values in the table. 

x

x

x

x

0

1

3

0

1

3

4

4

4

-1

0

3

y

0

1

3

y

0

1

3

y

1

2

4

y

1

-0

-3

(2, 3)

(2, -2)

(2, 2)

(4, 2)

Given y = x, explain what will happen to y for each value of x?

Explain what the graph of y = x will look like?

Exercise 1

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

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

Exercise 1

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

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

Exercise 1

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

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

Exercise 2.

Draw the graph using the coordinates in the table below. 

Use suitable axes and label the line.

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

NEW LEARNING

TITLE - Unit 10 Week 2 - Lesson 1 - NEW LEARNING

INSTRUCTIONS - Write down the following notes in your exercise book including the graph.

Explain in no more than 20 words, what does y = -x mean?

Exercise 3

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

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

Exercise 3

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

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

Exercise 3

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

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

Exercise 4

Use the table below to draw the equation y = -x. 

Use suitable axes and label the line.

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

1. (2, 2)
2. (-3.2, -3.2)
3. (1800, 1800)
4. (-4, 4)

Which line is NOT the line of y = x?

1. 
2. 
3. 
4. 

1. (7, 4)
2. (5, 4)
3. (-2, 2)
4. (7, 6)

Which graph is the line y = -x?

1. 
2. 
3. 
4. 

Reflection on the work covered

I CAN recognise each of the graphs: x = 3, y = 3 and y = x

I can recognize the difference between x = 3 and y = 3

I CANNOT recognise any of the graphs: x = 3, y = 3 and y = x

INDEPENDENT STUDY

TITLE - Unit 10 Week 1 - Lesson 4 - NEW LEARNING

INSTRUCTIONS - Write down the questions in your book and then answer. Show all of your working out.

Minimum target - Concept corner and questions 1 to 3