Final answer:
The equation y = -3r + 2.5 represents a linear equation in slope-intercept form, y = mx + b. The slope (m) is -3 and the y-intercept (b) is 2.5. The slope represents the rate of change of y with respect to r.
Step-by-step explanation:
The equation y = -3r + 2.5 represents a linear equation in slope-intercept form, y = mx + b.
In this equation, the slope (m) is -3 and the y-intercept (b) is 2.5.
The slope represents the rate of change of y with respect to r, while the y-intercept is the value of y when r is zero.