Shortest Path 2
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Question 1 of 4
1. Question
Find the sequence of the shortest path from point `A` to point `F`.
Hint
Help VideoCorrect
Excellent!
Incorrect
Dijkstra’s Algorithm is a method of finding a shortest path from a vertex to another by comparing multiple paths and finding the shortest value or sum of values.First, start finding the shortest paths to the vertices one edge away from `A`, which are `B`, and `J`.Always check for multiple paths and find the one with the lowest value.`B` `:` `8` or `5` 
`J` `:` `2` 
Now start finding the shortest paths to the vertices two edges away from `A`, which are `C` and `I`.Always check for multiple paths and find the one with the lowest value.`C` `:` `6` 
`I` `:` `8` or `7` 
Then start finding the shortest paths to the vertices three edges away from `A`, which are `H` and `D`.Always check for multiple paths and find the one with the lowest value.`H` `:` `11` or `8` 
`D` `:` `12` or `10` 
Next, start finding the shortest paths to the vertices four edges away from `A`, which are `G` and `E`.Always check for multiple paths and find the one with the lowest value.`G` `:` `16` or `9` 
`E` `:` `15` or `11` 
Now start finding the shortest paths to the vertex `F`.Always check for multiple paths and find the one with the lowest value.`F` `:` `14` or `12` 
Finally, mark the shortest path from `A` to `F` to find its sequence.Therefore, the sequence of the shortest path is `A-B-C-H-G-E-F`.`A-B-C-H-G-E-F` -
Question 2 of 4
2. Question
The network shows the time table of a bus to travel to between bus stops. Find the sequence with the shortest time to travel from bus stop `Q` to `W`.
Hint
Help VideoCorrect
Nice Job!
Incorrect
Dijkstra’s Algorithm is a method of finding a shortest path from a vertex to another by comparing multiple paths and finding the shortest value or sum of values.First, start finding the shortest paths to the vertices one edge away from `Q`, which are `R`, `U` and `X`.Always check for multiple paths and find the one with the lowest value.`R` `:` `25` or `13` 
`U` `:` `15` 
`X` `:` `14` 
Now start finding the shortest paths to the vertices two edges away from `Q`, which are `Y`, `S` and `V`.Always check for multiple paths and find the one with the lowest value.`Y` `:` `23` 
`S` `:` `27` or `24` 
`V` `:` `34, 30` or `28` 
Then start finding the shortest paths to the vertices three edges away from `Q`, which are `T` and `Z`.Always check for multiple paths and find the one with the lowest value.`T` `:` `39` or `35` 
`Z` `:` `32` or `29` 
Now start finding the shortest paths to the vertex `W`.Always check for multiple paths and find the one with the lowest value.`F` `:` `46, 45` or `44` 
Finally, mark the shortest path from `Q` to `W` to find its sequence.
Therefore, the sequence that will take the shortest time from `Q` to `W` is `Q-U-V-T-W`.`Q-U-V-T-W` -
Question 3 of 4
3. Question
Find the sequence of the shortest path from point `A` to point `E`.
Hint
Help VideoCorrect
Well Done!
Incorrect
Dijkstra’s Algorithm is a method of finding a shortest path from a vertex to another by comparing multiple paths and finding the shortest value or sum of values.First, start finding the shortest paths to the vertices one edge away from `A`, which are `B`, `I` and `H`.Always check for multiple paths and find the one with the lowest value.`B` `:` `12` or `11` 
`I` `:` `5` 
`H` `:` `7` 
Now start finding the shortest paths to the vertices two edges away from `A`, which are `G`, `C` and `J`.Always check for multiple paths and find the one with the lowest value.`G` `:` `17` or `12` 
`C` `:` `22` or `11` 
`J` `:` `22, 21` or `14` 
Then start finding the shortest paths to the vertices three edges away from `A`, which are `F` and `D`.Always check for multiple paths and find the one with the lowest value.`F` `:` `26` or `20` 
`D` `:` `24` or `22` 
Now start finding the shortest paths to the vertex `E`.Always check for multiple paths and find the one with the lowest value.`E` `:` `25` or `24` 
Finally, mark the shortest path from `A` to `E` to find its sequence.
Therefore, the sequence that will take the shortest path from `A` to `E` is `A-I-G-F-D-E`.`A-I-G-F-D-E` -
Question 4 of 4
4. Question
The network shows the time in minutes for a car to travel to between points. Find the sequence with the shortest possible time to travel from `E` to `J`.
Hint
Help VideoCorrect
Fantastic!
Incorrect
Dijkstra’s Algorithm is a method of finding a shortest path from a vertex to another by comparing multiple paths and finding the shortest value or sum of values.First, start finding the shortest paths to the vertices one edge away from `E`, which are `F`, `M` and `L`.Always check for multiple paths and find the one with the lowest value.`F` `:` `20` 
`M` `:` `15` 
`L` `:` `18` 
Now start finding the shortest paths to the vertices two edges away from `E`, which are `N`, `G`, `O` and `P`.Always check for multiple paths and find the one with the lowest value.`N` `:` `29` or `22` 
`G` `:` `36` or `32` 
`O` `:` `29` or `25` 
`P` `:` `32` or `28` 
Then start finding the shortest paths to the vertices three edges away from `E`, which are `Q`, `K` and `H`.Always check for multiple paths and find the one with the lowest value.`Q` `:` `29` 
`K` `:` `39, 36` or `35` 
`H` `:` `41` or `37` 
Now start finding the shortest paths to the vertices `J` and `I`.Always check for multiple paths and find the one with the lowest value.`J` `:` `41` or `39` 
`I` `:` `51` or `44` 
Finally, mark the shortest path from `E` to `J` to find its sequence.
Therefore, the sequence that will take the shortest time from `E` to `J` is `E-M-N-O-Q-K-J`.`E-M-N-O-Q-K-J`
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- Degrees 2
- Degrees 3
- Drawing a Network 1
- Drawing a Network 2
- Completing a Table from a Network Diagram
- Network from Maps and Plans
- Identify Paths and Cycles
- Eulerian Trails and Circuits 1
- Eulerian Trails and Circuits 2
- Identify Spanning Trees
- Minimum Spanning Trees 1
- Minimum Spanning Trees 2
- Shortest Path 1
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