Question

use the number line to find lf. lf = 14

Explanation:

Step1: Identify coordinates

Let the coordinate of $L$ be $10$ and the coordinate of $F$ be - 4.

Step2: Calculate distance

The distance between two points on a number - line is given by $|x_2 - x_1|$. Here, $LF=|10-(-4)|$.
$|10 - (-4)|=|10 + 4|=|14| = 14$.

Answer:

14