Question

find x such that the distance between the points is 5. (0,0),(x, -4)

Answer 1

i applied the distance formula, setting it equal to 5

Answer 2

or just use a vector

Answer 3

distance formula is the same either way

Answer 4

x^2 + 16 = 26

x = 3 or -3

Answer 5

and by 26 i mean 25

Answer 6

\[\sqrt{{x^2} + 4^2} = 5\]

Answer 7

right; now square both sides; or simply forgo that steps by doing it in your mind :)

Answer 8

right so we get: x = +-3

Answer 9

I thought if i applied the distance formula again with x = 3, i should get 5

Answer 10

you will

Answer 11

9+16 = 5^2

25 = 25

Answer 12

right i see, thank you!