Question

Find f(14) when using the function f(x) =9x+43

Answer 1

169

Explanation:

Functions are represented as a rule in terms of x as the independent variable and f(x) as the dependent variable.

Function Notation

Functions are written like f(x)=x. This might look unfamiliar but it is the same as y=x. In both examples, y and f(x) are the dependent variables.

If the x in f(x) is replaced by a constant, then the equation represents the function with x equals that constant.

So, the question asks to find the value of the function when x equals 14.

Solving the Function

Now to solve the function, we can plug 14 in for x.

• f(14) = 9(14) + 43

First, we can multiply 9*14

• f(14) = 126 + 43

Next, add together the remaining terms.

• f(14) = 169

This gives us the final answer of 169.