SOLUTION: how do you graph y=x-1?
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Question 11970: how do you graph y=x-1?
Answer by Earlsdon(6294) (Show Source): You can put this solution on YOUR website!
The simple way to graph y = x-1 is to generate at least two points, put those on your graph paper and draw a straight line through them.
Here's how you geneate the required points:
Use your equation, y = x-1 and choose an integer for x, say x=2, and substitute this into your equation to find the corresponding value of y.
y = 2 - 1
y = 1
So your first point has coordinates of (2, 1) Now repeat this operation with a different value of x, say x = 5.
y = 5 - 1
y = 4
Your second point has coordinates (5, 4)
Now mark these two locations on your graph paper. Starting at the origin of your graph (where the x-axis crosses the y-axis), go to the right 2 squares (x=2) then up 1 square (y=1) and mark your first point.
For the second point, again, start at the origin and go right 5 squares (x=5) and then up 4 squares (y=4) and mark your second point.
Using a straight-edge, draw a line joining these two points.
You have now graphed the equation: y = x - 1.
Compare your graph with the graph of y = x - 1 shown below.
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