We'll note the given point as A(m,
m+1).
We'll write the formula of the distance from a given
point to a given line:
d(A, line): |3*m - 4*(m+1) -
1|/sqrt[3^2 + (-4)^2]
But d(A, line) =
1
|3*m - 4*(m+1) - 1|/sqrt[3^2 + (-4)^2] =
1
(3*m - 4*(m+1) - 1)/sqrt(9+16) =
1
We'll multiply by sqrt 25 both
sides:
3m - 4m - 4 - 1 =
sqrt25
We'll combine like
terms:
-m - 5 = 5
We'll add 5
both sides:
-m = 10
m =
-10
The coordinates of the point A are: A(-10
, -9).
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