Answer:
10 possible lines
Step-by-step explanation:
Given
Required
Number of lines
From the question, the number of points (n) are:
If 3 points are not collinear (i.e. on a straight line), it means that only (5 - 3) of the points can be chosen
So, we have:
The number of lines is then calculated using combination formula.
<em>We used combination because the analysis done above implies that 2 points are to be selected from a,b,c,d and e.</em>
To select means combination
Having said that;
Substitute
<em>Hence, there are 10 possible lines</em>