Question

Help? What is the standard form of the equation of the given circle with center A(4, 8)?

Answer 1

I'm pretty sure 2.5 is the slope or acting slope? If so, you could use the point-slope formula to get the standard form equation.

Answer 2

does this help?

Answer 3

(x − 4)2 + (y − 8)2 = 2.5

(x + 4)2 + (y + 8)2 = 6.25

(x + 4)2 + (y + 8)2 = 2.5

(x − 4)2 + (y − 8)2 = 6.25

Answer 4

idk why it's messing up like that..

Answer 5

@Ghostgate

Answer 6

those are the answer choices btw .

Answer 7

hello?

Answer 8

Well having the equations I guess allows you to work it out. Plug (4, 8) into each equation and solve. I'll do that real quick:
(x - 4)2 + (y − 8)2 = 2.5
(4 - 4)2 + (8 - 8)2 = 2.5
(0)2 + (0)2 = 2.5
0 + 0 = 2.5
0 = 25 = False
(x + 4)2 + (y + 8)2 = 6.25
(4 + 4)2 + (8 + 8)2 = 6.25
(8)2 + (16)2 = 6.25
16 + 32 = 6.25
48 = 6.25 = False.

Answer 9

Honestly I'm not really sure.

Answer 10

I'm wanting to say it's C...

Answer 11

Okay thanks anyways !

Answer 12

I'm sorry I couldn't help you get the answer. :/