Write the equation in general form of the circle with the given properties.
center at (8, 7); r = 9

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If the answer provided did not suit your teacher/computer, it might be that the standard form is required, which is the first line of the previous response:

Equation of circle centred at (a,b) with radius r is:
(x-a)^2+(y-b)^2=r^2

with (a,b)=(8,7), i.e. a=8, b=7,  and r=9, the equation of the circle becomes

(x-8)^2+(y-7)^2=9^2
OR
(x-8)^2+(y-7)^2=81

There is no graph but what i can say is that 1 is the slope and that -2 is the y- intercept