SOLUTION: Hi! I usually get very confused when it comes to linear graphs and so I remember how to do them for a while but then I always forget! Please may you teach me how to plot linear gr

Click here to see ALL problems on Linear-systems

Question 698142: Hi! I usually get very confused when it comes to linear graphs and so I remember how to do them for a while but then I always forget! Please may you teach me how to plot linear graphs. This is the one I have in my practice exam paper:
Plot y= x/2 -1. I have almost mastered it but I would still need help when it came to plotting other graphs if they looked as hard as this. Thanks so much!
Answer by solver91311(24713) (Show Source):
You can put this solution on YOUR website!

Step 1. Pick a value for x. It can be anything you like, but 0, 1, or some other small integer usually works well and makes the arithmetic easier.

Step 2. Substitute that value in place of x in your equation. Do the arithmetic and determine the value of y that results.

Step 3. Take the value of x that you selected for step 1 and the value of y that you calculated in step 2 and form an ordered pair (x,y).

Step 4. Plot the ordered pair from Step 3 on your graph. Remember that the x value is the distance right or left along the horizontal axis and the y value is the distance up or down along the vertical axis.

Step 5. Repeat steps 1 through 4 with a different value for x.

Step 6. Draw a line across your graph that passes through the two points that you plotted.

John

My calculator said it, I believe it, that settles it