00:01
So this is a distance problem.
00:03
It tells us that our, um, the school is 20 blocks east and 12 blocks south of where we live.
00:10
So i'm going to put our house at the origin.
00:13
20 blocks east would be 20 to the right and 12 blocks south would be down 12.
00:20
So somewhere over here is the school and those coordinates in relation to our home would be 20 negative 12.
00:32
The other place we want to know about is the mall.
00:35
It's 10 blocks north and 7 blocks west.
00:38
So 10 blocks north, 7 blocks west would be here somewhere.
00:41
This is the mall.
00:44
That'd be negative 10, 7.
00:47
And so you plan on going to the mall right after school.
00:51
So we want to know the distance between the school and the mall, assuming that there's a road directly between them.
00:58
So i just want to know this distance here.
01:00
So we're just going to use the distance formula, which is the square root of, um, y2 minus y1 squared plus x2 minus x1 squared.
01:22
So, um, we are going to just label them...