The distance between two points (x1,y1) and (x2,y2) is:
d=(x2−x1)2+(y2−y1)2
Point A: (x1,y1)=(−5,7)
Point B: (x2,y2)=(−1,3)
d=(−1−(−5))2+(3−7)2
d=(4)2+(−4)2
d=16+16
d=32
32=16×2
32=16×2
32=16×2
32=42
Therefore, the distance between points A and B is 42 units.