Mathematics 0580 · IGCSE · Graphs of functions

Graphs of functions — practice question

This value table is based on $y = \frac{20}{x}$. For $x$: 1, 2, 3, 4, 5. The $y$-values already given are: 20, 10, [blank], [blank], 4.
(a)[2]

Fill in the missing values in the table for $y = \frac{20}{x}$.

(b)[3]

On the grid, sketch the graph of $y = \frac{20}{x}$ for $1 \leq x \leq 5$.

(c)[1]

Use the graph to solve $\frac{20}{x} = 8$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: The missing values are $20$, $10$, $6.67$, $5$ and $4$.

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