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Exam-style practice

Graphs of functions answer explanations

Review worked answers and explanations for Graphs of functions. Aligned to Cambridge IGCSE Mathematics.

Answer explanations

Question 1 of 2

Review the answer support, then move sideways through the set.

Paper 2 structured question: Graphs of functions

Paper 2Core or Extended Mathematics6 marks

Description

Graph of y = 2x + n

Consider the family of linear functions y = 2x + n where n can be -2, -1, 0, 1, 2, or 3.

xy when n=1y when n=3
-1
0
1
2
  1. a

    Calculate Complete the value table for y = 2x + 1 and y = 2x + 3 for x = -1, 0, 1, 2.

    [4]
  2. b

    Plot Plot the graphs of y = 2x + 1 and y = 2x + 3 on the same axes using the completed tables.

    [2]