Question

What is the value of the dependent variable if the value of the independent variable is –2b?. . f(x) = 3x – 5. A.. . –b. B.. . –11b. C.. . –6b – 5. D.. . 6b – 5

Answer 1

the function is f(x) = 3x – 5
and you are asked for when x=-2b
therefore f(-2b)=3(-2b)-5which gives -6b-5its all about substitution

Answer 2

-6b-5, you have to substitute the independent variable for x in the function and then solve for f(x) which is the dependent varaible

f(x) = 3x - 5

x = -2b

substitute the value of x to the equation.

f(x) = 3(-2b) -5

f(x) = -6b - 5