Year 8

Graphs of proportional relationships

Year 8

Graphs of proportional relationships

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Lesson details

Key learning points

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

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7 Questions

Q1.
The number of pens are directly proportional to the cost. What is the missing number?
An image in a quiz
£1.40
Correct answer: £5.60
£8.40
Q2.
The number of rulers are directly proportional to the cost. What is the missing number A?
An image in a quiz
+2
+4
x 2
Correct answer: x4
Q3.
The number of rulers are directly proportional to the cost. What is the missing number B?
An image in a quiz
£12.60
Correct answer: £16.80
£8.40
Q4.
x and y are directly proportional. What is the missing number in the box?
An image in a quiz
+ 14
x 2
Correct answer: x 3
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
Correct answer: £16.50
Q6.
Which description cannot go that can go in the arrow?
An image in a quiz
divide by 2
multiply by 1/2
Correct answer: multiply by 2
Q7.
Which number is missing from the box?
An image in a quiz
+1
x 0.5
Correct answer: x 1.5

5 Questions

Q1.
Which graph does not show to direct proportion?
An image in a quiz
A
B
Correct answer: C
Q2.
Which graph shows direct proportion?
An image in a quiz
Correct answer: A
B
C
Q3.
Which table does not shows direct proportion?
An image in a quiz
A
B
Correct answer: C
Q4.
Which table does not shows direct proportion?
An image in a quiz
Correct answer: A
B
C
Q5.
x and y are directly proportional as shown in the graph. What is the value of y when x = 10?
An image in a quiz
20
22
Correct answer: 25