Right triangle abc is located at a (−1, −2), b (−1, 1), and c (3, 1) on a coordinate plane. what is the equation of a circle a with radius segment ac?
(x + 1)2 + (y + 2)2 = 9
(x + 1)2 + (y + 2)2 = 25
(x − 3)2 + (y − 1)2 = 16
(x − 3)2 + (y − 1)2 = 25

answer:

step-by-step explanation:

use the distance formula to find the length of ac

the circle equation is in the format , with the center being at the point (h, k) and the radius being r

ac = 5, so r = 5

the center of circle a is point a, (-1,-2)

plug in these values to the circle equation.

seems like d

step-by-step explanation:

correct choice is b

step-by-step explanation:

when you calculate the average rate of change of a function, you are finding the slope of the secant line between the two points. for the function the average rate of change from point to point can be calculated as

to find the average rate of change from day 2 to day 10, note that at day 2, 8 houses were sold, so a(2,8) and at day 10, 2 houses were sold, so b(10,2). thus,