Question

How many straight lines can be formed from 8 non - collinear points on the X-Y plane?

Answer 1

28 straight lines can be formed from 8 non collinear points

Answer 2

Answer:

28 straight lines can be formed.

Step-by-step explanation:

Step 1: To Find the Straight lines formed on 8 non collinear points

Step 2: We know that the straight line has two points.

Step 3: That is, it has starting point and ending points

Step 4: Therefore according to permutation and combination we have

Number of lines = 8C2

Step 5: Expand the above combination value.

=8x7/2x1

=4x7

=28 lines

Step 6: Therefore 28 straight lines are formed from 8 non - collinear points on the X-Y plane.