Year 8

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## Lesson details

### Key learning points

- In this lesson, we will recognise and interpret the graphical representation of a proportional relationships.

### Licence

This content is made available by Oak National Academy Limited and its partners and licensed under Oak’s terms & conditions (Collection 1), except where otherwise stated.

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### 7 Questions

Q1.

The number of pens are directly proportional to the cost. What is the missing number?

£1.40

£8.40

Q2.

The number of rulers are directly proportional to the cost. What is the missing number A?

+2

+4

x 2

Q3.

The number of rulers are directly proportional to the cost. What is the missing number B?

£12.60

£8.40

Q4.

x and y are directly proportional. What is the missing number in the box?

+ 14

x 2

Q5.

A shop sells ribbon for £3 per metre. The length of the ribbon is directly proportional to its cost. What is the cost of 5.5 metres?

£14.50

£15.50

Q6.

Which description cannot go that can go in the arrow?

divide by 2

multiply by 1/2

Q7.

Which number is missing from the box?

+1

x 0.5

### 5 Questions

Q1.

Which graph does not show to direct proportion?

A

B

Q2.

Which graph shows direct proportion?

B

C

Q3.

Which table does not shows direct proportion?

A

B

Q4.

Which table does not shows direct proportion?

B

C

Q5.

x and y are directly proportional as shown in the graph. What is the value of y when x = 10?

20

22