Question

There is a circle with the center of (4,-1) and a radius of 7 the formula is (x-h)^2+ (y-k)^2=r^2 i think i got it but im not sure so i need a second opinion

Answer 1

(x-4)^2+(y+1)^2=49

Answer 2

hey thanks

Answer 3

In \((x-h)^2+ (y-k)^2=r^2\) the center is the point \((h,k)\). So what alfonsopadilla did was look at what you were given:

"center of (4,-1)" means \((h,k) = (4,-1)\) which in turn means:
\(h=4\)
\(k=-1\)
"radius of 7" means \(r=7\)

Then all he did was substitute in.