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The graph of $y = f(x)$ is drawn on the grid - Edexcel - GCSE Maths - Question 11 - 2017 - Paper 1

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Question 11

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The graph of $y = f(x)$ is drawn on the grid. (a) Write down the coordinates of the turning point of the graph. (b) Write down estimates for the roots of $f(x) = 0... show full transcript

Worked Solution & Example Answer:The graph of $y = f(x)$ is drawn on the grid - Edexcel - GCSE Maths - Question 11 - 2017 - Paper 1

Step 1

Write down the coordinates of the turning point of the graph.

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Answer

The coordinates of the turning point of the graph are (−1,−3)(-1, -3).

Step 2

Write down estimates for the roots of $f(x) = 0$.

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Answer

The estimates for the roots of f(x)=0f(x) = 0 are approximately (−0.75,2.75)(-0.75, 2.75).

Step 3

Use the graph to find an estimate for $f(1.5)$.

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Answer

The estimate for f(1.5)f(1.5) is approximately −2.8-2.8.

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