How many distinct line segment can be formed in line with 8 dinstinct points? A. 7
B. 14
C. 56
D. 28

A line needs 2 points.

To solve the number of lines you can have use the combination formula

8C2 = 8! / 2!(8-2)! = 28

The answer is D. 28

14 ft 7 inches

step-by-step explanation:

since each model inch corresponds to 25 real inches, 7 model inches will correspond to

7×25" = 175"

at 12" per foot, that is 14 feet, 7 inches.

for this case we have by definition, if two lines are perpendicular, then the product of their slopes is -1.

then, given the following line:

so,

we are looking for m_ {2}:

then, the line is given by:

we find "b" replacing the given point:

finally, the equation is:

option c