Concept explainers
Exercises 83−86: The table lists data that are exactly linear.
a. Find the slope-intercept form of the line that passes through these data points
b. Predict y when
88. Subscription and Streaming Music The following table shows digital music revenue in billions from subscriptions and streaming.
Year | 2011 | 2012 | 2013 | 2014 |
Revenue | 0.5 | 1.0 | 1.5 | 2.0 |
Source: Statista 2016,
a. Write a linear function f in both
b. Are there different answers for the slope-intercept form in part (a)? Explain.
c. Use f to estimate revenue in 2016. Did you use interpolation or extrapolation?
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