AQA FP1 2005 June — Question 8 8 marks

Exam BoardAQA
ModuleFP1 (Further Pure Mathematics 1)
Year2005
SessionJune
Marks8
PaperDownload PDF ↗
Mark schemeDownload PDF ↗
TopicConic sections
TypeParametric point verification
DifficultyStandard +0.3 This is a straightforward hyperbola question requiring identification of an x-intercept (trivial substitution y=0) and finding a point on the curve given a gradient constraint. Part (b) involves simultaneous equations with a linear equation and the hyperbola equation, which is standard FP1 technique with no novel insight required. Slightly easier than average due to the direct nature of both parts.
Spec1.02n Sketch curves: simple equations including polynomials

8 The diagram shows a part of the curve $$\frac { x ^ { 2 } } { 4 } - \frac { y ^ { 2 } } { 6 } = 1$$ and a chord \(P Q\) of the curve, where \(P\) lies on the \(x\)-axis. \includegraphics[max width=\textwidth, alt={}, center]{5bfb4d19-8772-43d7-b667-bd124d2504a8-05_751_1072_680_459}
  1. Write down the coordinates of \(P\).
  2. The gradient of the chord \(P Q\) is 2 . Find the coordinates of \(Q\).

Part (a)
AnswerMarks Guidance
\(P\) is \((2, 0)\)B1 1 mark
Part (b)
AnswerMarks Guidance
\(PQ\) is \(y = 2(x-2)\); Elimination of \(y\) (or of \(x\)); \((x-2)(5x-22) = 0\); \(Q\) is \((4.4, 4.8)\)M1A1F, m1A1F, A1A1 7 marks
Total: 8 marks
**Part (a)**
| $P$ is $(2, 0)$ | B1 | 1 mark | — |

**Part (b)**
| $PQ$ is $y = 2(x-2)$; Elimination of $y$ (or of $x$); $(x-2)(5x-22) = 0$; $Q$ is $(4.4, 4.8)$ | M1A1F, m1A1F, A1A1 | 7 marks | ft wrong value for $x_P$; ft numerical error |

**Total: 8 marks**

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8 The diagram shows a part of the curve

$$\frac { x ^ { 2 } } { 4 } - \frac { y ^ { 2 } } { 6 } = 1$$

and a chord $P Q$ of the curve, where $P$ lies on the $x$-axis.\\
\includegraphics[max width=\textwidth, alt={}, center]{5bfb4d19-8772-43d7-b667-bd124d2504a8-05_751_1072_680_459}
\begin{enumerate}[label=(\alph*)]
\item Write down the coordinates of $P$.
\item The gradient of the chord $P Q$ is 2 . Find the coordinates of $Q$.
\end{enumerate}

\hfill \mbox{\textit{AQA FP1 2005 Q8 [8]}}