SOLUTION: What is the equation of a line that contains the points (3, 0) and (0, -9)?

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Question 1064668: What is the equation of a line that contains the points (3, 0) and (0, -9)?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Start with a general equation,
Ax%2BBy=1
Then use the points to solve for A and B.
A%283%29%2BB%280%29=1
3A=1
A=1%2F3
and
A%280%29%2BB%28-9%29=1
-9B=1
B=-1%2F9
So,
x%2F3-y%2F9=1
highlight%283x-y=9%29