Classify the following pairs of equations given as parallel, perpendicular or neither on the basis of their respective slopes. DRAG & DROP THE ANSWER
Parallel
Perpendicular
7
3
y = 52+1
6
8
52
5
y = + 2
6
y = 62 - 1
y = 4x + 5
Neither
y =
1
52 - 4
3
y = 3x + 10

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?