In 2000, 49 %49% of the residents in a large city regularly used newspapers for getting news and this has decreased at an avera
ge rate of approximately 1.1 %1.1% per year since then. Find a linear function in slope-intercept form that models this description. The function should model the percentage of residents, Upper P (x )comma(x), who regularly use the news outlet x years after 2000?
You are given the percentage in 2000 (for x=0) as 49, and told that its rate of change is -1.1 percent per year. So, with a slope of -1.1 and an intercept of 49, the slope-intercept form of the linear equation becomes ...
P(x) = -1.1x +49
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The slope-intercept form for slope m and y-intercept b is ...
