4 triangles can be created with 3 points on a line.
20 triangles can be created with 6 points on a line.
30 triangles can be created with 7 points on a line.
Combination has to do with selection.
Note that a triangle has 3 vertices. If there are 4 points on a line, the number of triangles it is possible to create is derived using the combination formula shown as:
This means that 4 triangles can be created with 3 points on a line.
For a<u> line with 6 points:</u>
This shows that 20 triangles can be created with 6 points on a line.
For a<u> line with 7 points:</u>
This shows that 30 triangles can be created with 7 points on a line.
Learn more here: brainly.com/question/23885729