Loading…
Example 12.4 from Statistics, 12.1 Linear Equations
What are the independent and dependent variables? What is the y-intercept, and what is the slope? Interpret them using complete sentences.
Work it out on paper first. Then open the solution one step at a time, and stop as soon as you can finish on your own.
The independent variable (x) is the number of hours Svetlana tutors each session. The dependent variable (y) is the amount, in dollars, Svetlana earns for each session.
The y-intercept is 25 (a = 25). At the start of the tutoring session, Svetlana charges a one-time fee of $25 (this is when x = 0). The slope is 15 (b = 15). For each session, Svetlana earns $15 for each hour she tutors.
How did it go?