Question

19)
Application of Parabolas - Highway Overpasses/Underpasses
• A highway underpass is parabolic in shape.
* A parabola is the graph that results from p(x) = ax'+bx+c. Parabolas are symmetric about a
vertical line known as the Axis of Symmetry. The axis of symmetry runs through the
maximum or minimum point of the parabola is called the vertex.
a) If the highway overpass is represented by x' . 4x, then its zeros are:
1)(2,-2) i) (0,4) iii)(0,4) iv) None
1)3
b) If one zero of polynomial 3xŁ8x-2k-1 is seven times the other, the value of k is:
ii) 1/3, iii) -5/3 iv) none
c) The representation of the highway whose one zeros are 5 and -5 is:
i)xl-5x -5 ii) x 25 iii) x25 iv) x+5x-5
d) If the product of the zeros of the polynomial kx + 41x +42 is 7, then the zeros of the
polynomial (6-4)x’ + (k+1)x+ 5 is:
i)(-1,0) i) (1,5/2) iii)(-1,-5/2) iv) (2,5)
e) If p(x) = ax' + c represents Highway Underpass then one of its zeros is:
D) equal to the other ii) -ve of the other iii) reciprocal of the other iv) can't say​

Answer 1

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