26
Explanation
Step 1
the distance between 2 points is given by:
[tex]\text{distance =end point-initial point}[/tex]Also, watch in the graph that the distance is equal to the distance from -18 to cero(purple line) plus the distance between cero and 8( green line)
Step 2
replace
[tex]\begin{gathered} \text{distance =end point-initial point} \\ \text{distance =8-(-}18)=8+18=26 \\ \text{distance}=26 \end{gathered}[/tex]Hence, the distance is 26