SOLUTION: what is the slope foe : (1/7, 1) , (2, 1/2) ? how do u solve it? i need to slove for b . i got -7/26 is that right? thanks

Algebra ->  Coordinate Systems and Linear Equations  -> Lessons -> SOLUTION: what is the slope foe : (1/7, 1) , (2, 1/2) ? how do u solve it? i need to slove for b . i got -7/26 is that right? thanks       Log On


   

Question 44004: what is the slope foe : (1/7, 1) , (2, 1/2) ? how do u solve it?
i need to slove for b . i got -7/26 is that right?

thanks
Answer by adamchapman(301) About Me  (Show Source):
You can put this solution on YOUR website!
you have two sets of x and y coordinates (x1, y1) and (x2, y2)
x1=1/7
y1=1
x2=2
y2=1/2
Below is an EXTREMELY important equation:
%28y-y1%29%2F%28y2-y1%29=%28x-x1%29%2F%28x2-x1%29
put your values in:
%28y-1%29%2F%28-1%2F2%29=%28x-%281%2F7%29%29%2F%2813%2F7%29
%28y-1%29=%28-1%2F2%29%28x-%281%2F7%29%29%287%2F13%29
%28y-1%29=%28-7%2F26%29%28x-%281%2F7%29%29
%28y-1%29=%28-7%2F26%29x-%281%2F26%29
y=%28-7%2F26%29x%2B%2825%2F26%29
the gradient is -7/26.
well done!
I hope this helps.
P.S. I am trying to start up my own homework help website. I would be extremely grateful if you would send me your feedback on my help to adam.chapman@student.manchester.ac.uk