Algebra 8
4 marks · HardConsider the function with domain .
Explain how you determine the range of . Then write down the range.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
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Also accept: { -1, 0, 3, 8 }
Common mistakes: Forgetting to include all outputs; Calculating for incorrect domain elements
Show mark scheme and worked solution
Marking points
M1 · 1 mark · State that the range is found by substituting each value of the domain into the function.
M2 · 1 mark · Correctly substitute all values x = 0, 1, 2, and 3 into m(x).
A1 · 1 mark · All outputs are correctly calculated: m(0), m(1), m(2), m(3).
A2 · 1 mark · The final range is written as a set: { -1, 0, 3, 8 }.
Worked solution
To find the range of : Substitute each value from the domain into the function.
So the range is { -1, 0, 3, 8 }.