what is the equation of this grapgh
@jdoe0001
look like this one => http://www.mathwarehouse.com/geometry/circle/images/equation-of-circle/general-formula-equation-of-circle.png
these are my options (x – 4)2 + (y + 2)2 = 8 (x – 4)2 + (y + 2)2 = 16 (x + 4)2 + (y – 2)2 = 8 (x + 4)2 + (y – 2)2 = 16 i dont see any with both negatives though.
is it either b or d because 4²=16?
the center for the circle is the (h, k) points look at yours :)
what's the center for your circle? what's the radius?
4,-2 ?
what about the radius you think?
16
i think . beause 4 squared.
ohh, so the radius is 4 then :)
squared will be 16 yes, thus
\(\bf (x-h)^2+(y-k)^2 = r^2\\ \text{(h, k) = (4, -2), radius = 4}\\ (x-(4))^2+(y-(-2))^2 = 4^2\)
so its b ? (x – 4)2 + (y + 2)2 = 16 ..
\((x-4)^2+(y+2))^2 = 4^2 \implies (x-4)^2+(y+2))^2 = 16\)
thanks soo much (:...
yw
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