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# Graphing with a calculator

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### Graphing with a calculator

1. 1. Graphing with a calculator….<br />By: Leann Cox<br />
2. 2. “Basic knowledge”<br /> When you are given a graphing with the calculator problem…you basally know that you are going to need a calculator. The best thing about these types of problems is that it is mostly done on a graphing calculator. <br />Note to you: these are also one of those problem that you must do everything correctly or the rest of the problem with be wrong.<br />
3. 3. Ex: data that’s given to you!<br />
4. 4. Steps to graphing<br />Step 1: Push STAT-----> then you push<br />you see that it says EDIT….you <br />Push ENTER.<br />Step 2: then you inter the data from (x) into the column like so----- > <br />
5. 5. Continued the data <br />Then you add in the number from column (y) <br />Like so ----><br />
6. 6. Step 2 <br />After you have entered the data into the columns then you click (window) at the top of your graphing calculator. It takes you to a screen that says window with xmin, xmax, xscal, ymin, ymax, yscal, xres.<br />Note to you on how to do a window….. For (xmin) you choose a little smaller then your smallest x. (xmax) you choose a little bigger number than your biggest x. then for your (xscal) you will pick a number for your increments. (ymin) you pick a little smaller number than your lowest y. (ymax)you pick a little bigger number than your highest y. (yscal) you will pick the number for your increments. (xres) IT IS ALWAYS ONE( there is not reason to change it.) <br />
7. 7. Window<br />my window! <br />How I got the numbers? <br />Xmin would be 3 so I choose a smaller number so I chose 2 <br />Xmax would be 20 so I chose 21.<br />Xscl- I chose to go by 1s.<br />Ymin would be 4 so I chose the number 3<br />Ymax is 16 so I chose the number 17<br />Yscl- I choose to go by 1s. <br />Xres- always keep it at 1.<br />
8. 8. Graph by using the calculator! <br />TIP!----make sure you turn on a plot and you do this by 2nd y= then pick a plot and then click on and enter. If your plot is not one you wont be able to see your graph. <br />Then your graph will look like this.----------------------------> <br />
9. 9. Then the equation part of the problem<br />The vertex of this particular problem will be<br />The lowest or highest point. <br />So the vertex point (10,4)<br />Then you chose a point(any point you would like as long as you don’t pick one that is right beside your vertex) <br />The point is (3,16) <br />
10. 10. Then you start the equation.<br />
11. 11. Check math by the graph!<br />To check your math work you go to Y= on your calculator then you type your equation in like so------> <br />By adding this onto your graph you will see if your close to what your graph, then press the graph button and you get a screen like this-------- ---------------------------------------------------------><br />
12. 12. Continued(the graph)<br />
13. 13. The end! <br />You will see all the work we have completed that the equation we came up with Is somewhat close to the graph. <br />That’s how you graph with a graphing calculator!(: <br />(remember to take your time on these problems because if you mess up on a part of it more than likely in the end it will be wrong.)<br />