SOLUTION: I don't know how to linear graph X - y = 8

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Question 1026108: I don't know how to linear graph
X - y = 8
Found 5 solutions by josmiceli, ikleyn, josgarithmetic, mananth, MathTherapy:
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
+x+-+y+=+8+
Put it into the slope-intercept form
which looks like:
+y+=+m%2Ax+%2B+b+ where
slope = +m+
y-intercept = +b+
----------------------
Add +y+ to both sides
+x+-+y+%2B+y+=+y+%2B+8+
+x+=+y++%2B+8+
Subtract +8+ from both sides
+x+-+8+=+y+
Now just write it in the opposite direction
+y+=+x+-+8+
Now it is in the slope-intercpt form:
+y+=+m%2Ax+%2B+b+ where
+m+=+1+
+b+=+-8+
-------------
Now it's easy to graph because the slope +m=1+
tells you the line slopes up from lower left to
upper right.
The y-intercept +-8+ is where the line cuts
the y-axis. This is the point ( 0, -8 )
--------------
You just need 1 other point, the x-intercept.
That is where +y+=+0+, so
+y+=+x+-8+
+0+=+x+-+8+
+x+=+8+
This is the point ( 8,0 )
----------------------
Here's the plot:
+graph%28+400%2C+400%2C+-10%2C10%2C+-10%2C+10%2C+x+-+8+%29+

Answer by ikleyn(52786) About Me  (Show Source):
You can put this solution on YOUR website!
.
I don't know how to linear graph
X - y = 8
~~~~~~~~~~~~~~~~~~~~~~~~~~ 

From 

x - y = 8 

you can get 

x-8 = y

by moving y from the left to the right and changing its sign, and
by moving 8 from the right to the left and changing sign.

But x-8 = y is the same as y = x - 8.

Now ask yourself: can you plot / graph   y = x - 8  ?


Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Make a table of coordinate values. 
  x    |     y
_________________
  -4   |
  -3   |
  -2   | 
  -1   |
   0   |
   1   |
   2   |

Fill the missing y values, using your equation solved for y in terms of x.
x-y=8
x-y-x=8-x
x-x-y=-x%2B8
-y=-x%2B8
-y%2A%28-1%29=%28-x%2B8%29%28-1%29
y=x-8

Plot the points (x,y) and draw the line.

Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
x-y = 8
so y = x-8
Generate values for y assuming certain values for x
When
x= 9, y =1 (9,1)
x=-2, y =-10 (-2,-10)
x=5, y =-3 (5,-3)
Plot the points and draw a line graph
That's it


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

I don't know how to linear graph
X - y = 8
Substitute 0 for x and solve for y to get the y-intercept. This will be in the form: (0, y)

Substitute 0 for y and solve for x to get the x-intercept. This will be in the form: (x, 0)

Join the 2 points!

That's all! No need to go crazy and take a day when this can be done in less than a minute