The diagram shows a set of coordinate axes superimposed on the cross section of a sloping roof of height, h metres and width w metres. The equation of one half of the cross section is y= -0.7x+1.9.

Question

anonymous · Answer

a) What is the equation of the other half of the cross section? 
b) What is the width of the roof, w, to the nearest tenth of a metre? 
c) State the domain and range of each function that states each half of the roof.

anonymous · Answer

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anonymous · Answer

The answers for a) y = 0.7x + 1.9, but why? and b) 5.4 m, and why? D: