davidgba davidgba

17-11-2017
Mathematics

contestada

Please help!

A circle has center O(−3, 1) and radius 10. Which of the following points is on the circle?

V(−3, −4)
X(5, −2)
Y(−6, 0)
Z(5, 7)

Respuesta :

kishonwinston kishonwinston

18-11-2017

(x – h)^2 + (y – k)^2 = r^2

this equation is a derivative of the equation of a circle

x^2 + y^2 = r^2
This is from the origin. If we move the in x or y then the radius will change positions in x or y

with h = -3 and k = 1

we can plug in each set of numbers and solve.

we find Z to be on the circle edge!

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