Answer:
12
Step-by-step explanation:
There is a very simple to explain way to solve this involving the formula for slope-
<u>First, find slope (y1-y2)/(x1-x2)</u>
(1-3)/(-5-(-2)
2/3
<u>Second, find the change in x and multiply it by the slope.</u>
-2-(-5)= 3 unit change in x
3*(2/3)= 6
<em>Now we have the length of our first segment--</em><u> we must multiply by two (hence midpoint) to get our final answer for the whole segment length</u>
6*2=<u><em>12</em></u>