Question: & marks cale active. Let f(x)=x. Line L is the normal to the graph of at the point (4, 2). (a). Show that the

& marks cale active. Let f(x)=x. Line L is the normal to the graph of at the point (4, 2). (a). Show that the equation of L is y = -4x+18. (b) Point A is the .x-intercept of L. Find the x-coordinate of A. [3 marks] [1 mark] In the diagram below, the shaded region R is bounded by the x-axis, the graph of and the line L. 37 (c) Find the area of the region R. [4 marks]

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