Question

Find the distance between (-2,-1) (7,y) is 15

Answer 1

That doesn't make sense.

Answer 2

find y if the distance between the pionts a(-2,-1) b(7,y) is 15?

Answer 3

Use the distance formula.

Answer 4

\[\sqrt{(7-(-2))^{2}+(y-(-1))^{2}} = 15\]

Answer 5

\[\sqrt{81+y ^{2}+2y+1}^{ } = 15\]

Answer 6

\[y ^{2}+2y+82 = 225\]

Answer 7

\[y ^{2}+2y -143 = 0\]

Answer 8

\[(y+13)(y-11)= 0\]

Answer 9

y = -13 or y = 11