Hi there!
If you wanted to show your work, a good idea would be showing what numbers you would approximate or round the two numbers to, and divide the numbers.
Hope this helps!
a. The general equation for a circle centered at 
with radius 
is
The described circle has equation
We know the circle passes through the origin. This means that the equation above holds for 
and 
. The distance between any point on the circle and its center is the radius, so we can use this fact to determine :
So the circle's equation is
b. If the distance between point B and the center is less than 
, then B lies inside the circle. If the distance is greater than , it falls outside the circle. Otherwise, if the distance is exactly , then B lies on the circle.
The distance from B to the center is
, so 
, which means B falls outside the circle.
we are given
point for f(x) is (-5,-2)
Whenever we need to find point for a*f(x) , we will multiply a by y-value
Here , we have 2f(x)
so, we will multiply 2 units to y-value
y-value is -2
new y-value will be 2*-2=-4
so,
point for 2f(x) will be (-5,-4)........Answer
