00:01
In this question, they say that the scatter plot shows the time spent texting x and the time spent exercising y by each of 24 students last week.
00:13
In part a, i wanna write an approximate equation of the line of best fit for the data.
00:18
It doesn't have to be the exact line of best fit.
00:22
So let's see, if i were to draw a line of best fit, maybe i would start it up here at the point zero comma nine.
00:32
And it's going to come down roughly through the point nine comma two.
00:40
So roughly speaking, my line of best fit is gonna look something like this.
00:50
So we said passing through the points zero nine and nine two, roughly.
01:00
It's an approximate equation.
01:03
So now, i need to get my slope.
01:06
So my slope is gonna be what? it's y two minus y one.
01:11
So two minus nine over x two minus x one, nine minus zero.
01:17
I'm getting negative seven over nine as my slope...