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Sagot :
Using the given linear function, it is found that Avery was 7 kilometers above sea level before she started climbing.
What is a linear function?
A linear function is modeled by:
[tex]y = mx + b[/tex]
In which:
- m is the slope, which is the rate of change, that is, by how much y changes when x changes by 1.
- b is the y-intercept, which is the value of y when x = 0, and can be interpreted as the initial value.
In this problem, her altitude in kilometers after t hours is modeled by:
A(t) = 7 + 1.3t.
The y-intercept is of b = 7, which means that Avery was 7 kilometers above sea level before she started climbing.
More can be learned about linear functions at https://brainly.com/question/24808124
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