00:01
Okay, this one tells us that y varies directly with x and inversely with z squared.
00:13
Okay, so we can write that relationship and that it's equal to the constant of variation.
00:18
It then gives us some values so that we're able to find the constant of variation.
00:23
So when y is 8, z, well, z is 3, sorry, and x is 48.
00:35
So we just have to evaluate that.
00:40
So that's 8 times 9, which is 72 over 48.
00:49
Okay, so we can reduce that.
00:54
So 36 over 24, 18 over 12, 6 over 2.
01:00
Now, let's just work it down.
01:03
So 36 over 24, which is 18 over 12...