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Sagot :
Using a linear function and applying the concept of the x-intercept, it is found that the correct option is:
- (18, 0); the time it takes for the helicopter to reach the ground
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A linear function has the following format:
[tex]y = mx + b[/tex]
In which:
- m is the slope, which is the rate of change.
- b is the y-intercept, which is the value of y when x = 0.
In this problem:
- The initial height is of 18 feet, thus [tex]b = 18[/tex].
- After 2 seconds, the height is 16 feet, that is, in 2 seconds the height decayed 2 feet, thus [tex]m = -\frac{2}{2} = -1[/tex]
The function for the height after x seconds is:
[tex]y = -x + 18[/tex]
The x-intercept is the value of x when y = 0, that is, the time it takes for the helicopter to reach the ground. Then:
[tex]-x + 18 = 0[/tex]
[tex]-x = -18[/tex]
[tex]x = 18[/tex]
Thus, point (18,0), and the correct option is:
(18, 0); the time it takes for the helicopter to reach the ground
A similar problem is given at https://brainly.com/question/16410154
Answer:
(18, 0); the time it takes for the helicopter to reach the ground
Step-by-step explanation:
I got it right on my Quiz
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