Question

How do you find the value of a given the points (2,-5), (a,7) with a distance of 15?

Answer 1

Answer:

Step-by-step explanation:

the square of the distance between the given points is

(a - 2)^2 + (7 + 5)^2 = 225

(a - 2)^2 + 144 = 225

(a - 2)^2 = 81

a - 2 = +- 9

a = 2 +- 9

a = - 7 OR a = 11