Question

Which circle crosses neither the x–axis nor the y–axis when graphed?

(x – 7)2 + (y + 3)2 = 49

(x – 5)2 + (y – 4)2 = 25

(x + 8)2 + (y – 5)2 = 36

(x + 6)2 + (y + 5)2 = 16

Help??

Answer 1

define the radius of each one, then see which one has x and y values bigger than the radius

Answer 2

so, which one would that narrow it down to?

Answer 3

you are going to have to do the actual work. or ask me what it is you still ahve question about.

Answer 4

you have 3 relevant values in each equation: x,y,r^2

take the square root of that r^2 end and see if its smaller than the x and y parts.

Answer 5

@sirm3d

Answer 6

it's the fourth one. if |h| > r and |k| > r, then the center does not touch the circle.