Write down the equation of the line of gradient \(m\) through the point \((1, 2)\). Find, in terms of \(m\), the intercepts which this line makes on the two axes.
A line is drawn through the point \((1, 2)\) to form with the axes a triangle in the first quadrant. Find the least possible area of the triangle.
Can you express the area of the triangle as a function of the gradient, \(m\)?
How can we find the minimum value of a function?