Pregunta
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  1. a. Write the equation of .
    b. In what way is the slope of related to
    the slope of and the slope of ?
    (Include increasing or decreasing in your
    answer. Also identify which function is
    increasing faster.)
    c. In what way is the -intercept of related
    to the -intercepts of and of ?
    d. Is the equation of a line? Justify your
    answer.

Ask by Griffin Ramirez. in the United States
Jan 24,2025

Solución de inteligencia artificial de Upstudy

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a. The equation of is .
b. The slope of is the sum of the slopes of and . If , is increasing; if , it is decreasing. The function with the larger absolute slope increases or decreases more rapidly.
c. The -intercept of is the sum of the -intercepts of and , i.e., .
d. Yes, is the equation of a line because it is in the form , where and .

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Beyond the Answer

To tackle your queries about , let’s dive into the details!
The equation of is simply expressed as the sum of the equations defining and . If for example, is represented as and as , then we can write . This means the new slope is while the new y-intercept is .
Now, concerning slopes, if has a slope and has a slope , then has a combined slope of . If both slopes are positive, is increasing, and the function with the steeper slope (larger absolute value) will contribute to increasing faster. If one function has a negative slope, however, it could decrease depending on which has a greater magnitude.
As for the y-intercepts, the y-intercept of can be found by evaluating the y-values of and at . Thus, translates to . So it’s a straightforward addition of the y-intercepts of the two functions.
Finally, yes, is indeed the equation of a line, provided that and are both linear functions. The sum of two linear equations yields another linear equation, maintaining the form of ! So go ahead and graph those functions—straight lines galore!

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