Mathematics 0580 · IGCSE · Graphs of functions

Graphs of functions — practice question

The table gives some values for $y = x^3 - 3x^2 + x$.
(a)[3]

Fill in the table.

(b)[4]

On the grid, plot the graph of $y = x^3 - 3x^2 + x$ for $-0.75 \leq x \leq 2.75$.

(c)[3]

Use the graph to fill in the inequalities in $x$ for which $y > -1$. [BLANK] $< x <$ [BLANK] and $x >$ [BLANK].

(d(i))[2]

Write down the equation for this line.

(d(ii))[3]

On the grid, sketch this line and use it to solve the equation $x^3 - 3x^2 + 2x - 1 = 0$.

(e)[3]

By drawing a suitable tangent, estimate the gradient of the graph of $y = x^3 - 3x^2 + x$ at $x = -0.25$.

Worked solution & mark scheme

This 18-mark question has a full step-by-step worked solution and mark scheme. One marking point: Correct responses $0, -2, 0.9$

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