Part A: No. The line would have to be straight in order for the graph to be linear.
Part B:
Linear: y=2x-4.
Nonlinear: y=x^2-6.
Answer:
17.5 meters
Step-by-step explanation
I included an illustration of what they are asking for.
- Notice, since the light of the sun is coming from the same place, the shadow angles relative to the ground, X and Z, will be the same. So the triangles formed are similar
- Use SOH CAH TOA to find the angle Z
- This just means when you have an angle in a right triangle, in order to know whether to use Cosine, Sine or Tangent, look at what sides you have
- We have the sides opposite (O) and adjacent (A) to angle Z, so we tangent (T)
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- Now since angle Z equals X, they have the same tangent value
- So we can use that to find the building height, which it the opposite (O)
- Don't forget to use the new adjacent 14m
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