What s the equation of the line that passes through the points (1,23) and (1,1)?

1 Answer
Nov 5, 2017

y=56x16

Explanation:

y - y1 = m ( x - x1 )

point 1 : ( 1 , 2/3 )
point 2: ( -1 , -1 )
The numbering of the points is arbitrary; just be consistent.

m can be solved as:
y2y1x2x1

m=12311
m=56

y23=56(x1)
y=56x56+23
y=56x16

graph{y = 5/6 x - 1/6 [-6.21, 13.79, -1.64, 8.36]}