SOLUTION: I need help finding an equation of a line passing through the points (4,9) and (3,-2) and then writing the equation in the form Ax+By=C. I have tried to understand it but still hav

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Question 600678: I need help finding an equation of a line passing through the points (4,9) and (3,-2) and then writing the equation in the form Ax+By=C. I have tried to understand it but still have trouble. Can you please help.
Answer by jim_thompson5910(35256)   (Show Source): You can put this solution on YOUR website!

First let's find the slope of the line through the points and


Note: is the first point . So this means that and .
Also, is the second point . So this means that and .


Start with the slope formula.


Plug in , , , and


Subtract from to get


Subtract from to get


Reduce


So the slope of the line that goes through the points and is


Now let's use the point slope formula:


Start with the point slope formula


Plug in , , and


Distribute


Multiply


Add 9 to both sides


Combine like terms.


Subtract 11x from both sides


Combine like terms.


Rearrange the terms.


Multiply EVERY term by -1 to make the leading coefficient (the x coefficient) positive.


So the answer is

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