Answer:
B
Explanation:
Pythagorean Theorem:
8² + x² = 10²
The 8 is the distance between the y values of the points. Since we don't know the x value of the second point, we are solving for those possibilities.
64 + x² = 100
100 - 64 = x²
36 = x²
6 = x
This shows that the point with the missing x value is 6 x values away from the first point.
7 + 6 = 13
7 - 6 = 1