1. Find the distance from the origin to the center of the circle whose diameter has endpoints (6,5) and (2,1). 2. Circle 1 has a diameter with endpoints (−6, 5) and (−8, 9). Another circle has its center at one of the endpoints and its endpoint at the center of circle 1. Find all the equations of the possible circles that fit the description.
3. Find the x-intercept and y-intercept of:
a) x^2 + y^2 = 36 b) x^2 + y^2 = 49 c) x^2 + y^2 = 0.04
4. Determine if the point is on, inside, or outside the circle x^2 + y^2 = 45. Explain your reasoning:
a) (6,-3) b) (-1,7) c) (-3,5)

check the picture below.

well, the angle at the vertex d is clearly not a right-angle, let's check for the one at the vertex f which does look like,   however if it's indeed, that means ef is perpendicular to df, in which case their slopes will be negative reciprocal of each other.

so the negative reciprocal of the slope of ef is 1, however the slope of df is not 1, is 1/2, so nope, they're not perpendicular lines.

  the correct choice is marked

step-by-step explanation:

the first two graphs show multiple turning points. the last graphs matches the description in every detail.

x = 3 ± √(5+y)

idk

step-by-step explanation: