SOLUTION: how do you do the linear equation y=4-x?????????

Question 660771: how do you do the linear equation y=4-x?????????

Found 2 solutions by jim_thompson5910, MathLover1:
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
If you want to graph, then...

Start by rearranging terms to get

Looking at we can see that the equation is in slope-intercept form where the slope is and the y-intercept is

Since 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

Also, because the slope is , this means:

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 down 1 and over 1

So starting at , go down 1 unit

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

Now draw a line through these points to graph

So this is the graph of through the points and
Answer by MathLover1(20849) (Show Source): You can put this solution on YOUR website!
if you have the linear equation, means its graph is a line
...rearrange terms on right side
....this is a form of linear equation ( where is a slope and is )
so, in your case and
if slope is negative, means the line will mainly go through II and IV quadrant
is at (,)....now we have one point to plot on Cartesian coordinate system, and we need one more point to plot a line
easiest way is to find if you set :
...=>...
so, is at (,)

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