1.

Determine the equation of the circle graphed below.

Answer»

Step-by-step EXPLANATION:

(x - h) {}^{<klux>2</klux>} + (y - k) {}^{2} = {<klux>R</klux>}^{2}

here

r = 7. (the CIRCLE is symmetrical with y - axis )

h = 0. and k = 1

Thus equation of circle is,

(x - 0) {}^{2} + (y - ( - 1)) {}^{2} = {7}^{2}

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


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