Pearson Edexcel International GCSE (9–1) · MATHEMATICS A · Chapter
Algebra 6
17 practice questions
Practice questions
1–6 of 6 · Easy
Question 1
2 marks · Easy
Answer and see the solution →y is directly proportional to x. Given that y = 21 when x = 7, find the value of y when x = 10.
Question 2
3 marks · Easy
Answer and see the solution →Expand and simplify the following expression fully:
Question 3
4 marks · Easy
Answer and see the solution →The cost, C dollars, of printing a set of posters is directly proportional to the number of posters, n.
When 50 posters are printed, the cost is $80.
(a)[1 mark]Write the formula for C in terms of n.
(b)[2 marks]Calculate the cost of printing 120 posters.
(c)[1 mark]How many posters can be printed for $200?
Question 4
1 mark · Easy
Answer and see the solution →Simplify the following expression:
Question 5
1 mark · Easy
Answer and check →Evaluate 2^{3} \times 2^{-1}.
Question 6
2 marks · Easy
Answer and see the solution →If a = 3 and b = -2, calculate the value of the expression: