SOLUTION: Write a standard equation for a line that passes through f(4)=2 and f(2)=-1. Then find f(0). SO, the standard equation is y=mx+b (right?) Could you please walk me through this

Algebra ->  Graphs -> SOLUTION: Write a standard equation for a line that passes through f(4)=2 and f(2)=-1. Then find f(0). SO, the standard equation is y=mx+b (right?) Could you please walk me through this       Log On


   

Question 901746: Write a standard equation for a line that passes through f(4)=2 and f(2)=-1. Then find f(0).
SO, the standard equation is y=mx+b (right?)
Could you please walk me through this problem?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi

m+=%28y%5B1%5D+-+y%5B2%5D%29%2F%28x%5B1%5D+-+x%5B2%5D+%29

(4, 2)

(2,-1) m = 3/2

***Using point-slope form, y+-+y%5B1%5D+=+m%28x+-+x%5B1%5D%29P(4,2)

y -2 = (3/2)(x-4)

Slope-Intecept

 y = (3/2)x -4    0r 3x-2y = 8 Standard Form***

f(0)= (3/2)0 - 4 = -4