Answer:
11/9
Step-by-step explanation:
To find the slope
m = ( y2-y1)/(x2-x1)
= ( 9 - -2)/(1 - -8)
= ( 9+2)/ (1+8)
= 11/9
The answer would be A. There is a phase shift to the left. Because you are adding pi/6.
Answer:7
Step-by-step explanation: the answer is 7
Anyway, equation is (x-h)²+(y-k)²=r^2,
(h,k) is center and r is radius
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since center is (0,0), we get (x-0)²+(y-0)²=r² or simply x²+y²=r²
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to find r², subsitute the point (-9,0)
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(-9)²+(0)²=r², 81+0=r², 81=r², 9=r
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equation is x²+y²=9² or x²+y²=81
