2. in a relationship between variables, what is the variable called that changes in response to another variable?

a. function
b. input function
c. independent variable
d. dependent variable
3. a lawn care company charges a $10 trip fee plus $0.15 per square foot of x square feet of lawn for fertilization. which equation represents the relationship?

a. x = 0.10y + 15
b. y = 0.15x + 10
c. y = 10x + 0.15
d. x = 10y + 0.1

2. A function has two or more variables. Those whose values do not depend on anything are called the independent variables and those whose values depend on other factors are the dependent variables. The answer to this is letter D.

3. The total charge is the sum of the initial charge, $10, and the charge that is dependent on the number of square foot lawn. The answer is therefore,
                         y = 10 + 0.15x
This is letter B. 

Dependent variable

y = 0.15x + 10