Question

→ Shape Of Cross Slope
:
1. Prabolic Orber 2011
Applications of Parabolas-Highway Overpasses/Underpasses A highway
underpass is parabolic in shape.
Parabola
A parabola is the graph that results from p(x) =
ax2 + 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 which is called
the Vertex
(a) If the highway overpass is represented byx2 - 2x - 8. Then its zeroes
are
(i) (2,-4) (ii) (4,-2) (iii) (-2,-2) (iv) (-4,-4)
(b) The highway overpass is represented graphically. Zeroes of a
polynomial can be expressed graphically. Number of zeroes of
polynomial is equal to number of points where the graph of polynomial
(i) Intersects x-axis
(ii) Intersects y-axis
(iii) Intersects y-axis or x-axis (iv) None of the above
(c) Graph of a quadratic polynomial is a
() Straight line (ii) Circle (iii) Parabola
(iv) Ellipse
(d) The representation of Highway Underpass whose one zero is 6 and
sum of the zeros is 0, is
(i) x2 - 6x + 2 (ii) x2 - 36 (iii) x2 - 6 (iv) x2 – 3
(e) The number of zeros that polynomial f(x) = (x-2)2 + 4 can have is
(0) 1 (ii) 2 (iii) (iv)3​

Answer 1

Answer:

the total area of four walls of a room is 660 metre square and the length is twice its width. if the height of the room is 11 metre, then the area of its ceiling is

Answer 2

Answer:

i)b) (4,-2)

ii) a) intersects x-axis

iii) d) ellipse

iv) b) x2-36

v) c) 0