00:01
So here we have f of x is equal to 5 to the negative x.
00:09
So we have to first find a coordinate.
00:13
So we have x is zero.
00:16
So we're trying to find y.
00:17
So if x is zero, you're going to replace zero for x.
00:21
So if 5 negative zero is the same thing as 5 to the zero power, anything to the zero power is just one.
00:30
So now let's look at our next coordinate, which is blank.
00:37
We don't know the x, 25 for y.
00:42
So that means 25 is equal to 5 to the negative x.
00:50
Okay.
00:53
So i know that 25 is the same thing as 5 squared, and i'm going to set that equal to 5 to the negative x.
00:59
My bases are the same, so i'm going to say 2 is equal to negative x...