Finite Math Examples

$f (- 7) = \frac{x}{| x |}$

Step 1

Replace the variable $x$ with $- 7$ in the expression.

$f (- 7) = \frac{- 7}{| - 7 |}$

Step 2

Simplify the result.

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Step 2.1

The absolute value is the distance between a number and zero. The distance between $- 7$ and $0$ is $7$ .

$f (- 7) = \frac{- 7}{7}$

Step 2.2

Divide $- 7$ by $7$ .

$f (- 7) = - 1$

Step 2.3

The final answer is $- 1$ .

$- 1$

Step 3