SOLUTION: x-y=1

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Question 147262: x-y=1
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
Do you want to graph this?

x-y=1 Start with the given equation.


-y=1-x Subtract x from both sides.


y=%281-x%29%2F%28-1%29 Divide both sides by -1 to isolate y.


y=x-1 Rearrange the terms and simplify.




Looking at y=x-1 we can see that the equation is in slope-intercept form y=mx%2Bb where the slope is m=1 and the y-intercept is b=-1


Since b=-1 this tells us that the y-intercept is .Remember the y-intercept is the point where the graph intersects with the y-axis

So we have one point




Now since the slope is comprised of the "rise" over the "run" this means
slope=rise%2Frun

Also, because the slope is 1, this means:

rise%2Frun=1%2F1


which shows us that the rise is 1 and the run is 1. This means that to go from point to point, we can go up 1 and over 1



So starting at , go up 1 unit


and to the right 1 unit to get to the next point



Now draw a line through these points to graph y=x-1

So this is the graph of y=x-1 through the points and