Mr. Warner has a circular goldfish pond in his backyard. He knows the circumference but needs to find the diameter. Which method can Mr. Warner use to find the diameter? *

Divide circumference by π

Step-by-step explanation:

The formula for circumference is πd, where π is pi and d is the diameter.

This said, in order to find the diameter, he just needs to divide the circumference by π.

This will reverse the operation, and leave you with the diameter.

The correct answer is D (3x - 4y = 4)

Explanation:

Let (x1, y1) be (0, -1) and (x2, y2) be (-4, -4).

y - y1 = (y2 - y1)/(x2 - x1) * (x - x1)
y + 1 = (- 4 + 1)/(- 4 - 0) * (x - 0)
y + 1 = (-3)/(-4) * x
y + 1 = (3/4)x
(y + 1) * 4 = 3x
4y + 4 = 3x
4 = 3x - 4y
3x - 4y = 4