BC: Graphing a Line by:Rachel F. and Jessica K.
FC: Graphing A Line | By: Rachel F. & Jessica K.
1: Steps to Graph a Line | 1. Make a chart 2. Pick 3 x-values (Domain) 3. Plug in your x-values 4. Solve for Y (Range) 5. List your coordinates 6. Plot your points and graph the line
2: Making a Chart | When you are making a chart, you are figuring out and showing where the points on a coordinate plane are. | Step 1
3: This is an example of a type of chart that is made.
4: Choose Three X-Values | For this step, you need to choose three x-values, or Domains. | These are going to be the value of the variable x. | Step 2 | You can also choose negative numbers. | For the Domains, you can choose any number you would like.
5: I usually like to use 0, 1, and 2. It is easier that way and makes it easier to graph it. | But, for fractions like 1/2 it is easier to do even numbers, like 0, 2, and 4.
6: Plug in your X-Values | Now, you take whatever the value of the domains, and plug it into the X in the problem. | Step 3
8: Step 4 Solve for Y | Solve the problem when you plug in X and figure out what the value of Y is
9: If the problem is y=3x+4, and your Domain is 1, then you would fill in the x with one. Then you multiply 3 times 1 which is three, after that add the four which comes to 7. So, the answer is 7.
10: Step 5 | List your Coordinates | In this step, you put your X value and your Y value together to make a coordinate | The coordinates show where the points are on the coordinate plane
11: The Roman Numerals on the Coordinate Plane show the quadrants of it | This is the Coordinate Plane
12: Plot the points and Graph the Line | You use the coordinates you just made and find them on the coordinate plane | Your "X" value goes on the X-Axis, and your "Y" value goes on the Y-Axis. Remember, "X" comes before "Y" in the alphabet. | Step 6
13: Coordinates go onto the plane
14: See how w
15: e did it? | The points should make a straight line
16: Now it's your turn! | Solve this practice problem | A minute on the clock, and.... GO!
17: y=3x+5
18: Now, Let's Solve It | The problem was y=3x+5. So, we need to do the first step. | The first step is to choose your x-values.
19: Step 1 of Solving | Step 1 is to make a chart. This is what one should look like.
20: Step 2 of Solving | Step 2 is to choose x-values. Like I said before, you can choose any that you would like. | Also, like I said before, I like to use 0, 1, and 2. They just make things easier.
21: Step 3 of Solving | Step 3 is plugging in your x-values. You put the x-values that you chose (for me 0, 1, and 2) in the chart. | Then, you put the "X" value into the X in the problem.
22: Step 4 of Solving | Step 4 is to solve for the value "Y" We solve the problem then place our answer in the Y column. This number will go on the Y Axis in the end.
23: Step 5 of Solving | Step 5 of Solving is to list your coordinates. These show where the dots are on the graph
24: Step 6 for Solving | Step 6 for solving is to plot your points and graph the line | You take the coordinates and plot them. The "X" value goes on the X Axis, and the "Y" value goes on the Y Axis | Your points should make a straight line if you connect them | And your finished!
26: Lets try another! | How about: y = 2x-4
27: GO! | Don't worry, we'll give you a minute
28: So.. | You made your chart | Then you chose your X's | After that you plugged X into your problem | Solved for Y | Listed your coordinates | Then plotted your points and graphed a line! | You should have come up with something like...
29: You should have come up with something like...
30: Thanks for Watching! | Now you know all the steps to graphing a line! | It's as easy as 1, 2, 3!
31: This has been: Graphing a Line | By: Jessica Kegley and Rachel Fairchild