Answer:
Using the Pythagorean theorem we can first put the points into x and y
x1 = 7
y1 = 9
x2 = 1
y2 = 1
The distance between the two points can be found as follows:
d = √((x2 - x1)² + (y2 - y1)²)
= √((1 - 7)² + (1 - 9)²)
= √((-6)² + (-8)²)
= √(36 + 64)
= √100
= 10
Therefore, the distance between the points (7, 9) and (1, 1) is 10 units.