Mathematics 0580 · IGCSE · Graphs of functions

Graphs of functions — practice question

The table lists some values of $y = \frac{6}{x}$. The x-values shown are -5, -4, -3, -2, -1, 1, 2, 3, 4, 5. The y-values already given are: when x = -5, y = -1.2; when x = -4, y = -1.5; when x = 1, y = 6; when x = 3, y = 2; when x = 4, y = 1.5; when x = 5, y = 1.2.
(a(i))[2]

Fill in the table.

(a(ii))[4]

Using the grid, draw the graph of $y = \frac{6}{x}$ for $-5 \leq x \leq -1$ and $1 \leq x \leq 5$.

(a(iii))[1]

On the same grid, draw the line $y = 4$.

(a(iv))[1]

Find the co-ordinates of the point where the line $y = 4$ meets the graph of $y = \frac{6}{x}$.

(b(i))[1]

On this grid, plot point $A (-1, -3)$.

(b(ii))[1]

Draw a line with gradient 2 through point $A$.

(b(iii))[2]

Write the equation of your line in the form $y = mx + c$.

Worked solution & mark scheme

This 12-mark question has a full step-by-step worked solution and mark scheme. One marking point: -2, -3, -6, 3

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