Determine the equation using two dots

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Ana.stasia

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My goal was to determine the equation using two dot's coordinates. I think my answer is correct because as you can see I tried it out. However, in the book it is not listed as the solution, but rather x+4y is.

Would there be a reason 2x+2y-3 wouldn't be listed or is it a mistake?

How do I get x+4y=0

IMG_20210209_172532.jpg
 
Ana.stasia said:
My goal was to determine the equation using two dot's coordinates. I think my answer is correct because as you can see I tried it out. However, in the book it is not listed as the solution, but rather x+4y is.

Would there be a reason 2x+2y-3 wouldn't be listed or is it a mistake?

How do I get x+4y=0

View attachment 25005
Click to expand...
Look closely:
1612888494725.png
Where did the 4 go to? This should have been -1/4.

As for your successful check, you need to check both points. The one you used to write the equation will work even if the slope is wrong; the other will not.

(What you called "dots" are usually called "points".)
 
Ana.stasia said:
My goal was to determine the equation using two dot's coordinates. I think my answer is correct because as you can see I tried it out. However, in the book it is not listed as the solution, but rather x+4y is.

Would there be a reason 2x+2y-3 wouldn't be listed or is it a mistake?

How do I get x+4y=0

View attachment 25005
Click to expand...
In the 5th line from top, you lost a '4' in the denominator
 
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