Question

the value of k if the distance between (2,8) and(2,k) is 3 is _________​

Answer 1

Answer:

√[(2-2)^2+(8-k)^2]=3

64+k^2-16k=9

k^2-16k+55=0

k^2-11k-5k+55

k(k-11)-5(k-11)

k=5 or k=11