Overview
- (a) Is the slope of the line positive and negative? How do you know from looking at the graph?
(b) What is the slope?
(c) Explain in details how you find the slope.
2. Let y be a college's enrollment (in thousands of students), and let x be the number of years that the college has been open. Assume that the equation y=0.8x+6 describes the relationship between x and y.
(a) When x = 0, the y value is y = 0.8*(0)+6 = 6. What does the ordered pair (0, 6) represent in practical terms (i.e. in terms of year of opening of college and number of enrollment)?
(b) is the ordered pair (5, 10) a point on the graph of y = 0.8x + 6? Why or why not?
(c) Is the number of enrollmen