Edexcel C1 2012 January — Question 6

Exam BoardEdexcel
ModuleC1 (Core Mathematics 1)
Year2012
SessionJanuary
TopicStraight Lines & Coordinate Geometry

6. \begin{figure}[h]
\includegraphics[alt={},max width=\textwidth]{ff1cdb91-0286-4bc8-9e67-451500b2bf74-07_647_927_274_513} \captionsetup{labelformat=empty} \caption{Figure 1}
\end{figure} The line \(l _ { 1 }\) has equation \(2 x - 3 y + 12 = 0\)
  1. Find the gradient of \(l _ { 1 }\). The line \(l _ { 1 }\) crosses the \(x\)-axis at the point \(A\) and the \(y\)-axis at the point \(B\), as shown in Figure 1. The line \(l _ { 2 }\) is perpendicular to \(l _ { 1 }\) and passes through \(B\).
  2. Find an equation of \(l _ { 2 }\). The line \(l _ { 2 }\) crosses the \(x\)-axis at the point \(C\).
  3. Find the area of triangle \(A B C\).