The width of the arch at ground level is 8 units if the equation. y = -3/4(x + 4) (x – 4), where "x" and "y" are measured in feet.
What is a parabola?
It is defined as the graph of a quadratic function that has something bowl-shaped.
As we know that, the arch meet the ground when y = 0
[tex]\rm y = -\dfrac{3}{4}(x + 4) (x- 4)[/tex]
Plug y = 0
(x + 4)(x - 4) = 0
x = 4 or x = 0 = -4
The points are (4, 0) and (-4, 0)
The distance between the above two points:
w = 8 units
Thus, the width of the arch at ground level is 8 units if the equation. y = -3/4(x + 4) (x – 4), where "x" and "y" are measured in feet.
Learn more about the parabola here:
brainly.com/question/8708520
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