 This is just going to be a quick tutorial on the basics of the calculator that we will be using. This is the TI-84 and this is called your home screen. This is where you would do your typical calculations. But let's look at how to put an equation in and then look at its graph and look at its table. If you notice over here where my cursor is showing, you'll see as I do keystrokes it'll put that in there so you may want to refer back to this if you can't remember how to do something. Alright, so the first thing we want to do is go to y equal. That will allow us to put an equation in and then we just put in 2x plus 3. So I'll hit 2 and then the variable key is diagonally down from your second key or across from your alpha key and then we would put plus 3. And if I press enter we have our equation put in and I can go look at different parts of my calculator. Now over here on what I'm using you can see the equation screen, you can see the table screen and you can see the graph screen but for yourself you just have this one and we need to get to the other parts. If we want to look at just the graph we would hit graph and that will show us the graph. Okay, now I want to show you how to get to a standard window so I'm going to come over here and clear out our cute history and make a window. If I want a standard window that comes very quickly by hitting the zoom key and then you'll see here at 6 it says z standard so you can just hit your sixth key and now it changes you can see that the axes have changed and come more centered and that would be a standard window. If I want to change my window I can hit the window key. All of these values will allow me to tell my smallest x value to bar this to the left x max would be farthest to the right on the x axis that I want and the scale will tell me if I'm going to the tick mark is going to be one or whatever I choose. Y minimum again is how far down you want your graph to go and how far up you want to go for y max and again the scale you can choose depending on this what your numbers are and we won't do anything with this x res so a standard window looks like this negative 10 to 10 every one negative 10 to 10 every one let's say that we wanted it to be negative 5 so I can come in here and put negative and then the 5 key and then press enter to positive 5 so press 5 and then enter and I can keep the scale of one and if I let's say I want this to be negative 10 for the y so just press enter and enter again because I like my negative one but I want my y max to go to 30 and since it's a little bit bigger between my numbers I'm going to go every two and enter and now if I go back and look at the graph I will see that my axes have changed and now I'm seeing a more detailed look at the graph because I have fewer x's to look at so my graph looks a little bit bigger it's not really same graph just a different view all right let's go back to our standard window so zoom and then six and we're at our standard window okay if I want to look at the table you hit second graph and that will show you your table it has x in this column and the y values if you plug them into your equation the resulting y values for this x I would have three so if I put over here two times zero it would be zero plus three that's why we have three in the y all right how can we use this well let's say that I wanted to know what y was equal to when x is 10 I can do one of two things I can arrow down do the down arrow until I get to 10 and I see that when x is 10 y is equal to 23 or you could hit the second window then you'll notice that this table start that always is an x value what x value do you want to start at so we could just put in the y value that we know we put in our 10 and then we can just press second graph to look at the table and there it just pops us right at 10 so let's say that I wanted to go and know when x was 100 well I don't want to scroll all the way down to 100 so I'm gonna again go to second window and I'm gonna do my table start I'm gonna tell it to go to 100 then when I press second graph to look at the table I see that when it's 100 y is 203 those are the basics on how to enter an equation look at the graph and look at the table