SOLUTION: Slope -3/7; through (7,0) I used the point-slope equation method to solve, but for some reason I am not understanding how to solve. I used y2-y1=m(x-x1) y-0=-3/7(x-7) y=-

Question 127431: Slope -3/7; through (7,0)
I used the point-slope equation method to solve, but for some reason I am not understanding how to solve.
I used y2-y1=m(x-x1)
y-0=-3/7(x-7)
y=-3/7.7/3 reciprocal
y=1x-7
The answer is supposed to be 3x+7y=21.
I have no idea how to get there.
Thank you.
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
Well, you are correct...up to a point!
You are given the slope: and a point (7, 0) and you wrote:
This is correct, so far. Now, it appears that you want the answer in standard form: , so...
Distribute the to get:
Then multiply through by 7.
Now write this in standard form by adding 3x to both sides:

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