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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