Here are four graphs - Edexcel - GCSE Maths - Question 18 - 2019 - Paper 3
Question 18
Here are four graphs.
Graph A
Graph B
Graph C
Graph D
The graphs represent four different types of function f.
Match each description of the function in the ta... show full transcript
Worked Solution & Example Answer:Here are four graphs - Edexcel - GCSE Maths - Question 18 - 2019 - Paper 3
Step 1
f(t) is inversely proportional to x
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Answer
Graph B. This graph shows a hyperbolic function which typically represents inverse relationships.
Step 2
f(t) is a trigonometric function
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Answer
Graph A. This graph has the characteristic wave-like pattern associated with sine or cosine functions.
Step 3
f(t) is an exponential function
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Graph D. This graph demonstrates exponential growth, typical of functions of the form f(t) = a * e^(bx).
Step 4
f(t) is directly proportional to √x
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Answer
Graph C. This graph shows a function that increases at a decreasing rate, consistent with the square root function.
