Answer:
The answer to your question is 7 units
Explanation:
Data
A = (3, 7)
B = (-4, 7)
Process
1.- Write the formula of the distance between two points
dAB =

x1 = 3 y1 = 7 x2 = -4 y2 = 7
2.- Substitute the values
dAB =

3.- Simplify
dAB =

dAB =

4.- Result
dAB = 7 units
5.- Conclusion
The distance between these points is 7 units.