0:03 in order to find any point it's just
0:05 like crossing the street
0:08 because a point is always x first y second
0:09 second
0:11 but one of my students used to say it's
0:13 easy you just start in the middle
0:15 but when you cross the street you gotta
0:18 look left or right first
0:21 then you can go up or down second
0:24 brilliant let's copy that down
0:26 and this is how we'll find any point
0:28 we'll just always start in the middle
0:31 that's called the origin
0:33 now in our case we're gonna go to the
0:36 right three so the first number x is three
0:37 three
0:39 then we're gonna go down two
0:42 so the y value negative two
0:44 and that is the point
0:46 we're done
0:48 this could be called a couple different
0:51 things ordered pair coordinate point but
0:53 they all mean the same thing
0:55 and it can represent the location of
0:57 just about anything
0:59 but probably a starbucks that just moved
1:01 into your city
1:03 we're gonna play a little game here
1:05 let's pretend that these are four
1:06 different taco bells
1:08 and our house is in the middle which
1:10 one's closest
1:12 well the first one both numbers are
1:15 positive so it's to the right and up
1:18 let's do it to the right three
1:20 up one right there
1:22 okay not too far
1:24 the next one to the right two
1:27 and then down four
1:29 so a little bit further away
1:31 the next two they're both negative to
1:34 start so they're going to be to the left
1:37 the orange one left two but then
1:41 positive so up three and that final one
1:43 left one down two
1:45 right there
1:48 and that is the winning taco bell
1:50 we'll go ahead and grab our faves the
1:53 double decker taco nacho cheese chalupa
1:55 all the things
1:58 notice if we drive there it's only one
2:00 two three blocks away
2:04 but that purple one one two three four
2:10 three new cell towers are added to our city
2:11 city
2:13 maybe to freak us out maybe to give us
2:14 better coverage
2:16 what are the locations of these three points
2:18 points
2:19 feel free to pause if you want to try
2:23 this one on your own
2:25 we'll start with that green point there
2:28 that one four to the right so x is four
2:32 but it doesn't go up or down so the y zero
2:33 zero
2:36 the blue one that's not bad that's just
2:38 left three negative three
2:41 then up to positive
2:42 and the purple one
2:47 left so negative and down also negative
2:55 this data represents tomato plant growth
2:57 on earth and in space
3:00 but the data for space seems pretty favorable
3:01 favorable
3:03 so that's encouraging for our mission to
3:06 mars despite the radiation
3:08 plot the points for growth on earth for
3:10 week two and four
3:14 so week two we see as a height of 5.2
3:16 we'll go to the right two
3:19 we'll go up five but point two just to
3:22 smidge more so right there
3:26 week four same idea right four but that
3:28 one up 14.6
3:31 let's just hit 14 to start
3:35 14.5 is right in the middle so 0.6 right
3:37 above that
3:39 but notice it was easier to find the
3:42 weak first the height second
3:45 in other words x first y second
3:47 that's the reason we did it that way for
3:49 all of these
3:51 if you're curious how fast did the plant
3:53 grow from here to here
3:56 that would be represented by the slope
3:58 so if that's something you're interested
4:02 in keep an eye out for that video
4:04 good luck with these you got these let
4:06 me know what issues you run into
4:09 they're not paying me but make it to
4:11 your nearest taco bell as soon as possible
4:12 possible
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