Concept explainers
(a) To find:
The x-intercept rounded to nearest tenth.
Solution:
x-intercept is
Concept:
To find the
A point where a graph crosses the
It is in the form of (a, 0).
To find the y-intercept of a graph, we should substitute x
A point where a graph crosses the
It is in the form of (0, b).
Explanation:
Given equation is
Let y=0,
we get, x-intercept is
Conclusion:
x-intercept is
(b) To find:
The meaning of x-intercept rounded to nearest tenth.
Solution:
The number of analaog movie screens became zero after 5 years since 2009.
Concept:
To find the
A point where a graph crosses the
It is in the form of (a, 0).
To find the y-intercept of a graph, we should substitute x
A point where a graph crosses the
It is in the form of.edc(0, b).
Explanation:
Given equation is
Where x is number of years and y is number of analog movie screens
Let y=0,
we get, x-intercept is
This means, The price of regular admission was zero dollars 22 years ago since 2000. That is 1978. Minus symbol represents the number of years decreasing.
c) To use:
Part (b) to comment on your opinion of the limitations of using equations to model real data.
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