Question

A line has a slope of
1
4
and passes through the point (0.2,
4
5
).

Find the value of b, the y-intercept.


b =

Answer 1

Use y = mx + b. With m = 1/4 and (x,y) = (0.2, 4/5),

b = y - mx = 4/5 - (1/4)(0.2) = 4/5 - 1/20 = 15/20 = 3/4.

b = 3/4