SOLUTION: hello i am very lost on graphing linear equations. I have tried but i am still really confused. Sketch the graph of the equation y=-1. please show all your work thank you so much!

Algebra ->  Linear-equations -> SOLUTION: hello i am very lost on graphing linear equations. I have tried but i am still really confused. Sketch the graph of the equation y=-1. please show all your work thank you so much!       Log On


   

Question 195835: hello i am very lost on graphing linear equations. I have tried but i am still really confused. Sketch the graph of the equation y=-1. please show all your work thank you so much! the chapter is exploring graphs of linear equations and the text book is Passport to Algebra and Geometry.
Answer by Edwin McCravy(20056) About Me  (Show Source):
You can put this solution on YOUR website!

Plot some points.  Make a chart like this

x | y
-----
  |
  |
  |

Now since the equation is y = -1, the only
choice we can give for y is -1, so we put
-1's for all the y's

x | y
-----
  |-1
  |-1
  |-1

The equation y = -1 contains no x's, so we
can pick any three numbers at random for
the x's.  Say we pick -3, 0, and 4

x | y
-----
-3|-1
 0|-1
 4|-1

Plot those three points



Draw a straight line through them:



So you see it is a horizontal line through -1 on the
y-axis.  

Edwin