Question

What is the equation of a circle passing through (-4, -4) and tangent to the line 2x-3y+9=0 at (-3, 1)?

Answer 1

Did you learn how to differentiate, yet?

Answer 2

na'a . im so confused with the question

Answer 3

Ok. Then did you try drawing this problem out?

Answer 4

yes, just the line

Answer 5

This might get ugly, so stay with me for the whole time.

Answer 6

okay :)

Answer 7

Let (a,b) be the center of the circle, and r as the radius.

Answer 8

the equation of the circle is\[(x-a)^2+(y-b)^2=r^2\]

Answer 9

From the center of the circle, all points are equidistant, right?

Answer 10

correction: all points on the circle

Answer 11

gotcha! Thanks:)

Answer 12

You completely got it?

Answer 13

yeah! thanks so much !

Answer 14

Aright! Good luck!