Question

Which value could be the y-coordinate for point Q?
O 2/5
O 4/2
O 2/13
O 8/2

Answer 1

It is 2√5

Explanation:

`{ \bf{ {(x - a) + {(y - b)}^(2) = {r}^(2) } }} \\ { \tt{ {(4 - 0)}^(2) + {(y - 0)}^(2) = {6}^(2) }} \\ { \tt{16 + {y}^(2) = 36}} \\ { \tt{ {y}^(2) = 20 }} \\ { \tt{ {y} = √(5 * 4) }} \\ { \tt{y = 2 √(5) }}`

Answer 2

2 rt5

Explanation:

equation of circle

x^2 + y^2 = r^2

4^2 + y^2 = 6^2

16 + y^2 = 36

y^2 = 20

y = sqrt of 20

y = 2 rt5