Pearson Edexcel International GCSE (9–1) · MATHEMATICS A · Unit
Unit 3
104 practice questions
Topics covered
Practice questions
11–20 of 36 · Easy
Question 11
3 marks · Easy
Answer and see the solution →The sum of two numbers is 18.
(a)[1 mark]Let the numbers be x and y. Write an equation for their sum.
(b)[1 mark]If their difference is 4, write a second equation for x and y.
(c)[1 mark]Solve the equations to find the values of x and y.
Question 12
1 mark · Easy
Answer and see the solution →Expand the bracket: (x + 6)(x - 2)
Question 13
1 mark · Easy
Answer and check →If 2x = 14, what is the value of x?
Question 14
1 mark · Easy
Answer and see the solution →Factorise x^2 - 16.
Question 15
1 mark · Easy
Answer and see the solution →On a distance–time graph, what does a horizontal line represent about the motion of an object?
Question 16
2 marks · Easy
Answer and see the solution →A walker covers 8 km in 2 hours at a constant speed. What is her speed in km/h?
Question 17
3 marks · Easy
Answer and see the solution →(a)[2 marks]The distance–time graph shows a straight line from (0, 0) to (2, 10). What is the speed in km/h?
(b)[1 mark]What does the straight line indicate about the movement?
Question 18
1 mark · Easy
Answer and check →Which feature in a distance–time graph shows the object is returning towards its starting point?
- A.A horizontal line
- B.A straight line sloping upwards
- C.A line sloping downwards
- D.A curved line
Question 19
2 marks · Easy
Answer and see the solution →A car is stationary for 30 minutes and then travels 12 km in 40 minutes at a constant speed. What is the speed of the car in km/h?
Question 20
3 marks · Easy
Answer and see the solution →A bus follows this journey:
Stage Time (minutes) Distance from depot (km) Start 0 0 A 20 16 B 40 32 (a)[1 mark]Calculate the bus's speed between start and A.
(b)[1 mark]Calculate the speed between A and B.
(c)[1 mark]State whether the bus changed speed, and how you know.