Suppose that a constant rate of change exists between x and

Suppose that a constant rate of change exists between x and y such that y=2.5x.

a. As x varies from 4 to 5.9, how does the value of y vary? The value of y changes by __________________________.    

b. As x varies from 3.4 to -2.7, how does the value of y vary? The value of y changes by ____________________________.

Solution

Suppose that a constant rate of change exists between x and y such that y = 2.5x.

a. As x varies from 4 to 5.9, value of y changes by y = 2.5*(5.9 - 4) = 4.75 (answer)____________________.    

b. As x varies from 3.4 to -2.7, The value of y changes by y = 2.5*(- 2.7 - 3.4) = 15.25 (answer)