Higher June 2019 Paper 3 Q17

EdexcelCurrent spec2 marksDrawing & Using Graphs

17 Here are four graphs.

Four sketch graphs of f(x) against x: Graph A is a sine-shaped curve through O; Graph B is a reciprocal curve in the first and third quadrants; Graph C is a curve rising from O and levelling off, like a square root; Graph D is an exponential curve crossing the positive f(x) axis

The graphs represent four different types of function f.

Match each description of the function in the table to the letter of its graph.

Description of functionGraph
\(\mathrm{f}(x)\) is inversely proportional to \(x\)
\(\mathrm{f}(x)\) is a trigonometrical function
\(\mathrm{f}(x)\) is an exponential function
\(\mathrm{f}(x)\) is directly proportional to \(\sqrt{x}\)

(2)

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