00:01
Okay, i've taken the information from this problem and summarized it right here.
00:06
So basically we're starting with 14 gallons of gas, we're using one gallon every 25 miles, we're letting g be the number of gallons left in the tank, and we're letting d equal the total distance traveled.
00:22
Now, it might be a little bit easier to come up with the equation by doing the first.
00:30
So let's put the gallons on this side.
00:35
I just spelled gallons wrong, that's pretty funny.
00:38
I guess that's why i'm a math teacher, not an english teacher.
00:41
And let's put the miles down here.
00:47
So i am starting with 14 gallons of gas, and once i've driven 25 miles, well, now i have 13 gallons of gas.
01:01
Again, i'm using one gallon for every 25 miles.
01:05
Once i've driven 50 miles, now i've got 12 gallons.
01:13
Once i've driven 75, now i have 11.
01:18
And i could keep going all the way till i run out of gas.
01:22
But what you see is, this is a linear function, this is going to be a straight line...