posted by jack on .
If line f is parallel to the line h, and line f has y-intercept 5, what is the equation of line f ? With h passing through two points (1, 2) and (3, 6)
REINY answered your earlier post and she said to try doing it yourself.
She did a similar example for you to follow. I pasted her example below.
Post your work if you get stuck.
Math - Reiny, Tuesday, January 25, 2011 at 12:09pm
slope of line through the two points = (6-2)/(3-1) = 2
so the slope of your new line = -1/2
since the slopes must be negative reciprocals of each other.
y = (-1/2)x + b
but (2,2) lies on this
2 = (-1/2)(2) + b
3 = b
y = (-1/2)x + 3