1 The point \(A\) has coordinates \(( 11,2 )\) and the point \(B\) has coordinates \(( - 1 , - 1 )\).
- Find the gradient of \(A B\).
- Hence, or otherwise, show that the line \(A B\) has equation
$$x - 4 y = 3$$
- The line with equation \(3 x + 5 y = 26\) intersects the line \(A B\) at the point \(C\). Find the coordinates of \(C\).