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Lesson details

Key learning points

  1. In this lesson, we will learn how to recognise when two quantities are directly proportional to each other.

Licence

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6 Questions

Q1.
Alex goes to a fair. He wants to go on 6 rides. Each ride costs £2. How much will he pay?
£10
Correct answer: £12
£8
Q2.
The cost of four pencils is £1.60 What is the cost of one pencil.
£0.4
0.4
Correct answer: 40 pence
Q3.
The cost of four pencils is £1.60. What is the cost of 12 pencils?
£19.20
£2.80
Correct answer: £4.80
Q4.
It costs 60 p to send text messages. Alex has been charged £3 for text messages by Vodafone. How many text messages did he send?
0.05
180
4
Correct answer: 5
Q5.
Which rule connects n to C?
An image in a quiz
Correct answer: C = 4n
n = 4C
n = C - 3
n = C + 3
Q6.
True or False? A graph of direct proportion always starts at the origin.
False
Correct answer: True

6 Questions

Q1.
A chain costs 8p per 2cm. The cost and length are directly proportional. What is the cost of 6 cm?
10 p
12 p
16 p
Correct answer: 24 p
Q2.
The number of text messages sent and the cost are directly proportional. It costs 60 pence to send 10 text messages. What is the cost of sending 20 text messages?
Correct answer: 120 pence
200 pence
600 pence
Q3.
The number of text messages sent and the cost are directly proportional. It costs 60 pence to send 10 text messages. What is the cost of sending 5 text messages?
Correct answer: 30 pence
300 pence
50 pence
Q4.
If 4 ice creams cost £4.80, what is the cost of 12 ice creams?
Correct answer: £14.40
£19.20
£57.60
Q5.
Look at the table below. Choose the correct statement that describes the relationship between the number of mugs and the cost of the mugs.
An image in a quiz
Correct answer: The cost and the number of mugs are directly proportional.
The cost and the number of mugs are not directly proportional.
Q6.
Look at the table below. Choose the correct statement that describes the relationship between the number of hours worked and the pay.
An image in a quiz
The number of hours worked and the pay are directly proportional.
Correct answer: The number of hours worked and the pay are not directly proportional.

Lesson appears in

UnitMaths / Direct and indirect proportion