Answer:
The center (2,6) and the radius is 8
Step-by-step explanation:
The equation of a circle is (x-h)^2 + (y-k)^2 =r^2
where (h,k) is the center of the circle and r is the radius
We have
(x-2)^2 + (y-6)^2 =64
(x-2)^2 + (y-6)^2 =8^2
The center (2,6) and the radius is 8
I think it would be the first one because the y intercept is 8 and to find the gradient u do rise/run
X^2-x-22=8
x^2-x-30=0
x^2-6x+5x-30=0
x(x-6)+5(x-6)=0
(x+5)(x-6)=0
Answer:
y = 360
Step-by-step explanation:
Given y is inversely proportional to x² then the equation relating them is
y = 
← k is the constant of proportion
To find k use the condition y = 10 when x = 3 , then
10 = 
= 
( multiply both sides by 9 )
90 = k
y = 
← equation of proportion
When x = 
, then
y = 
= 
= 90 × 4 = 360
