Question

I need an explanation how to solve it

Answer 1

f(1) = -2

Explanation:

The relationship between x and y-values can be represented through a function.

Function Notation

Function notation is one way to write out an equation. In this notation, f(x) represents the y-value at a specified x-value. Thus, f(1) equals the y-value when x is 1. Many times f(x) will be replaced with variable y. So, another way to write the function above is y = -x - 1.

Solving For f(1)

To find f(1), plug 1 into the equation for x.

• f(1) = -1 - 1

Now, you can easily solve the equation.

• f(1) = -2