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Graphs and Coordinates
Circles
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Created by
Lukas Skripka
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Cards (3)
What is the equation of a circle?
(
x
−
a
)
2
+
(x-a)^2+
(
x
−
a
)
2
+
(
y
−
b
)
2
=
(y-b)^2=
(
y
−
b
)
2
=
r
2
r^2
r
2
What is the centre of a circle using its
equation
?
(
a
,
b
)
What is the radius of a circle using its equation?
r
