SOLUTION: Graph the linear equation by solving for y first. -x+3y= -9

Click here to see ALL problems on Graphs

Question 761858: Graph the linear equation by solving for y first.
-x+3y= -9
Answer by jim_thompson5910(35256) (Show Source):
You can put this solution on YOUR website!
solve for y to get

-x+3y= -9

3y= x-9

y= 1/3x-9/3

y= 1/3x-3

Now let's graph this

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 3. This means that to go from point to point, we can go up 1 and over 3

So starting at , go up 1 unit

and to the right 3 units 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