If the coordinates of point a are (8, 0) and the coordinates of point b are (3, 7), the y-intercept of is . if the coordinates of point d are (5, 5), the equation of line is y = x + . nextreset

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?