What is the slope of the line passing through (1, 2) and (3, 8) ?

a. slope = 1/7

b. slope = 1/3

c. slope = 3

d. slope = 7

The slope is calculated to be C. Slope = 3.

Formula for slope = y2-y1/x2-x1

m = y2-y1/x2-x1

Lets suppose:

(x1, x2) = (1, 2)

(y1, y2) = (3, 8)

putting the coordinates in the formula:

m = (8-2) / (3-1)

m = 6 / 2

m = 3

slope = 3

So according to above explanation,

c. slope = 3, is the correct answer.