Answer:
The distance among those points is 5 units
Step-by-step explanation:
See the picture please
he formula of a distance between a point (a, b)
and a line Ax + By + C = 0:

We have the point A(-1, 7) → a = -1, b = 7
and the line y = 3x → 3x - y = 0 → A = 3, B = -1, C = 0.
Substitute:

<h3>Answer: d = √10</h3>
What do you need? I know many mathematical skills
The total degrees of a triangle is 180.
So
37+63=100
And well
180-100=80
U=80